Finding the Fourth Proportional to 12,651.98, 17,463.78 and 7,345.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,651.98 : 17,463.78 = 7,345.76 : x
2. Step 2: Convert to fraction form
   12,651.98/17,463.78 = 7,345.76/x
3. Step 3: Cross multiply
   12,651.98x = 17,463.78 × 7,345.76
4. Step 4: Simplify right side
   12,651.98x = 128,284,736.57
5. Step 5: Solve for x
   x = 128,284,736.57/12,651.98
6. Step 6: Final answer
   x = 10,139.50