Finding the Fourth Proportional to 9,902.38, 13,665.24 and 5,426.26

Step by Step Solution

1. Step 1: Write the proportion equation
   9,902.38 : 13,665.24 = 5,426.26 : x
2. Step 2: Convert to fraction form
   9,902.38/13,665.24 = 5,426.26/x
3. Step 3: Cross multiply
   9,902.38x = 13,665.24 × 5,426.26
4. Step 4: Simplify right side
   9,902.38x = 74,151,145.20
5. Step 5: Solve for x
   x = 74,151,145.20/9,902.38
6. Step 6: Final answer
   x = 7,488.21