Finding the Fourth Proportional to 12,859.40, 17,746.47 and 7,554.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,859.40 : 17,746.47 = 7,554.17 : x
2. Step 2: Convert to fraction form
   12,859.40/17,746.47 = 7,554.17/x
3. Step 3: Cross multiply
   12,859.40x = 17,746.47 × 7,554.17
4. Step 4: Simplify right side
   12,859.40x = 134,059,762.55
5. Step 5: Solve for x
   x = 134,059,762.55/12,859.40
6. Step 6: Final answer
   x = 10,425.04