Finding the Fourth Proportional to 12,657.76, 17,466.40 and 7,353.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,657.76 : 17,466.40 = 7,353.12 : x
2. Step 2: Convert to fraction form
   12,657.76/17,466.40 = 7,353.12/x
3. Step 3: Cross multiply
   12,657.76x = 17,466.40 × 7,353.12
4. Step 4: Simplify right side
   12,657.76x = 128,432,535.17
5. Step 5: Solve for x
   x = 128,432,535.17/12,657.76
6. Step 6: Final answer
   x = 10,146.55