Finding the Fourth Proportional to 12,447.98, 17,179.07 and 7,604.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,447.98 : 17,179.07 = 7,604.78 : x
2. Step 2: Convert to fraction form
   12,447.98/17,179.07 = 7,604.78/x
3. Step 3: Cross multiply
   12,447.98x = 17,179.07 × 7,604.78
4. Step 4: Simplify right side
   12,447.98x = 130,643,068.98
5. Step 5: Solve for x
   x = 130,643,068.98/12,447.98
6. Step 6: Final answer
   x = 10,495.12