Finding the Fourth Proportional to 12,860.02, 17,752.57 and 7,555.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,860.02 : 17,752.57 = 7,555.18 : x
2. Step 2: Convert to fraction form
   12,860.02/17,752.57 = 7,555.18/x
3. Step 3: Cross multiply
   12,860.02x = 17,752.57 × 7,555.18
4. Step 4: Simplify right side
   12,860.02x = 134,123,861.81
5. Step 5: Solve for x
   x = 134,123,861.81/12,860.02
6. Step 6: Final answer
   x = 10,429.52