Finding the Fourth Proportional to 12,876.66, 17,773.29 and 10,543.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,876.66 : 17,773.29 = 10,543.86 : x
2. Step 2: Convert to fraction form
   12,876.66/17,773.29 = 10,543.86/x
3. Step 3: Cross multiply
   12,876.66x = 17,773.29 × 10,543.86
4. Step 4: Simplify right side
   12,876.66x = 187,399,081.50
5. Step 5: Solve for x
   x = 187,399,081.50/12,876.66
6. Step 6: Final answer
   x = 14,553.39