Finding the Fourth Proportional to 9,901.10, 13,663.52 and 5,425.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,901.10 : 13,663.52 = 5,425.02 : x
2. Step 2: Convert to fraction form
   9,901.10/13,663.52 = 5,425.02/x
3. Step 3: Cross multiply
   9,901.10x = 13,663.52 × 5,425.02
4. Step 4: Simplify right side
   9,901.10x = 74,124,882.83
5. Step 5: Solve for x
   x = 74,124,882.83/9,901.10
6. Step 6: Final answer
   x = 7,486.53