Finding the Fourth Proportional to 9,939.31, 13,715.55 and 5,463.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,939.31 : 13,715.55 = 5,463.25 : x
2. Step 2: Convert to fraction form
   9,939.31/13,715.55 = 5,463.25/x
3. Step 3: Cross multiply
   9,939.31x = 13,715.55 × 5,463.25
4. Step 4: Simplify right side
   9,939.31x = 74,931,478.54
5. Step 5: Solve for x
   x = 74,931,478.54/9,939.31
6. Step 6: Final answer
   x = 7,538.90