Finding the Fourth Proportional to 9,131.32, 12,601.12 and 5,153.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.32 : 12,601.12 = 5,153.72 : x
2. Step 2: Convert to fraction form
   9,131.32/12,601.12 = 5,153.72/x
3. Step 3: Cross multiply
   9,131.32x = 12,601.12 × 5,153.72
4. Step 4: Simplify right side
   9,131.32x = 64,942,644.17
5. Step 5: Solve for x
   x = 64,942,644.17/9,131.32
6. Step 6: Final answer
   x = 7,112.08