Finding the Fourth Proportional to 12,870.71, 17,759.41 and 7,566.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870.71 : 17,759.41 = 7,566.56 : x
2. Step 2: Convert to fraction form
   12,870.71/17,759.41 = 7,566.56/x
3. Step 3: Cross multiply
   12,870.71x = 17,759.41 × 7,566.56
4. Step 4: Simplify right side
   12,870.71x = 134,377,641.33
5. Step 5: Solve for x
   x = 134,377,641.33/12,870.71
6. Step 6: Final answer
   x = 10,440.58