Finding the Fourth Proportional to 9,938.42, 13,715.02 and 5,401.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,938.42 : 13,715.02 = 5,401.09 : x
2. Step 2: Convert to fraction form
   9,938.42/13,715.02 = 5,401.09/x
3. Step 3: Cross multiply
   9,938.42x = 13,715.02 × 5,401.09
4. Step 4: Simplify right side
   9,938.42x = 74,076,057.37
5. Step 5: Solve for x
   x = 74,076,057.37/9,938.42
6. Step 6: Final answer
   x = 7,453.50