Finding the Fourth Proportional to 12,381.86, 17,077.43 and 8,604.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,381.86 : 17,077.43 = 8,604.98 : x
2. Step 2: Convert to fraction form
   12,381.86/17,077.43 = 8,604.98/x
3. Step 3: Cross multiply
   12,381.86x = 17,077.43 × 8,604.98
4. Step 4: Simplify right side
   12,381.86x = 146,950,943.60
5. Step 5: Solve for x
   x = 146,950,943.60/12,381.86
6. Step 6: Final answer
   x = 11,868.24