Finding the Fourth Proportional to 12,869.42, 17,762.31 and 7,564.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,869.42 : 17,762.31 = 7,564.25 : x
2. Step 2: Convert to fraction form
   12,869.42/17,762.31 = 7,564.25/x
3. Step 3: Cross multiply
   12,869.42x = 17,762.31 × 7,564.25
4. Step 4: Simplify right side
   12,869.42x = 134,358,597.82
5. Step 5: Solve for x
   x = 134,358,597.82/12,869.42
6. Step 6: Final answer
   x = 10,440.15