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Finding the Fourth Proportional to 13,335.72, 18,405.54 and 7,749.96

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Solution

The fourth proportional to 13,335.72, 18,405.54 and 7,749.96 is: 10,696.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,335.72 : 18,405.54 = 7,749.96 : x
  2. Step 2: Convert to fraction form
    13,335.72/18,405.54 = 7,749.96/x
  3. Step 3: Cross multiply
    13,335.72x = 18,405.54 × 7,749.96
  4. Step 4: Simplify right side
    13,335.72x = 142,642,198.78
  5. Step 5: Solve for x
    x = 142,642,198.78/13,335.72
  6. Step 6: Final answer
    x = 10,696.25

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