Finding the Fourth Proportional to 12,870.52, 17,757.30 and 7,565.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870.52 : 17,757.30 = 7,565.56 : x
2. Step 2: Convert to fraction form
   12,870.52/17,757.30 = 7,565.56/x
3. Step 3: Cross multiply
   12,870.52x = 17,757.30 × 7,565.56
4. Step 4: Simplify right side
   12,870.52x = 134,343,918.59
5. Step 5: Solve for x
   x = 134,343,918.59/12,870.52
6. Step 6: Final answer
   x = 10,438.11