Finding the Fourth Proportional to 9,131.48, 12,597.42 and 5,352.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.48 : 12,597.42 = 5,352.72 : x
2. Step 2: Convert to fraction form
   9,131.48/12,597.42 = 5,352.72/x
3. Step 3: Cross multiply
   9,131.48x = 12,597.42 × 5,352.72
4. Step 4: Simplify right side
   9,131.48x = 67,430,461.98
5. Step 5: Solve for x
   x = 67,430,461.98/9,131.48
6. Step 6: Final answer
   x = 7,384.40