Finding the Fourth Proportional to 9,938.09, 13,713.40 and 5,461.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,938.09 : 13,713.40 = 5,461.12 : x
2. Step 2: Convert to fraction form
   9,938.09/13,713.40 = 5,461.12/x
3. Step 3: Cross multiply
   9,938.09x = 13,713.40 × 5,461.12
4. Step 4: Simplify right side
   9,938.09x = 74,890,546.98
5. Step 5: Solve for x
   x = 74,890,546.98/9,938.09
6. Step 6: Final answer
   x = 7,535.71