Finding the Fourth Proportional to 11,086.72, 16,630.17 and 7,814.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,086.72 : 16,630.17 = 7,814.50 : x
2. Step 2: Convert to fraction form
   11,086.72/16,630.17 = 7,814.50/x
3. Step 3: Cross multiply
   11,086.72x = 16,630.17 × 7,814.50
4. Step 4: Simplify right side
   11,086.72x = 129,956,463.47
5. Step 5: Solve for x
   x = 129,956,463.47/11,086.72
6. Step 6: Final answer
   x = 11,721.81