Finding the Fourth Proportional to 12,870.35, 17,761.21 and 7,565.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870.35 : 17,761.21 = 7,565.25 : x
2. Step 2: Convert to fraction form
   12,870.35/17,761.21 = 7,565.25/x
3. Step 3: Cross multiply
   12,870.35x = 17,761.21 × 7,565.25
4. Step 4: Simplify right side
   12,870.35x = 134,367,975.04
5. Step 5: Solve for x
   x = 134,367,975.04/12,870.35
6. Step 6: Final answer
   x = 10,440.12