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Finding the Fourth Proportional to 18,978.04, 26,188.14 and 11,017.72

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Solution

The fourth proportional to 18,978.04, 26,188.14 and 11,017.72 is: 15,203.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,978.04 : 26,188.14 = 11,017.72 : x
  2. Step 2: Convert to fraction form
    18,978.04/26,188.14 = 11,017.72/x
  3. Step 3: Cross multiply
    18,978.04x = 26,188.14 × 11,017.72
  4. Step 4: Simplify right side
    18,978.04x = 288,533,593.84
  5. Step 5: Solve for x
    x = 288,533,593.84/18,978.04
  6. Step 6: Final answer
    x = 15,203.55

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