Finding the Fourth Proportional to 9,897.29, 13,658.25 and 5,421.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,897.29 : 13,658.25 = 5,421.04 : x
2. Step 2: Convert to fraction form
   9,897.29/13,658.25 = 5,421.04/x
3. Step 3: Cross multiply
   9,897.29x = 13,658.25 × 5,421.04
4. Step 4: Simplify right side
   9,897.29x = 74,041,892.47
5. Step 5: Solve for x
   x = 74,041,892.47/9,897.29
6. Step 6: Final answer
   x = 7,481.03