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Finding the Fourth Proportional to 15,813.04, 21,820.14 and 8,739.52

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Solution

The fourth proportional to 15,813.04, 21,820.14 and 8,739.52 is: 12,059.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,813.04 : 21,820.14 = 8,739.52 : x
  2. Step 2: Convert to fraction form
    15,813.04/21,820.14 = 8,739.52/x
  3. Step 3: Cross multiply
    15,813.04x = 21,820.14 × 8,739.52
  4. Step 4: Simplify right side
    15,813.04x = 190,697,549.93
  5. Step 5: Solve for x
    x = 190,697,549.93/15,813.04
  6. Step 6: Final answer
    x = 12,059.51

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