Finding the Fourth Proportional to 9,132.56, 12,602.88 and 4,940.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,132.56 : 12,602.88 = 4,940.72 : x
2. Step 2: Convert to fraction form
   9,132.56/12,602.88 = 4,940.72/x
3. Step 3: Cross multiply
   9,132.56x = 12,602.88 × 4,940.72
4. Step 4: Simplify right side
   9,132.56x = 62,267,301.27
5. Step 5: Solve for x
   x = 62,267,301.27/9,132.56
6. Step 6: Final answer
   x = 6,818.17