Finding the Fourth Proportional to 14,123.91, 19,491.12 and 8,156.60

Step by Step Solution

1. Step 1: Write the proportion equation
   14,123.91 : 19,491.12 = 8,156.60 : x
2. Step 2: Convert to fraction form
   14,123.91/19,491.12 = 8,156.60/x
3. Step 3: Cross multiply
   14,123.91x = 19,491.12 × 8,156.60
4. Step 4: Simplify right side
   14,123.91x = 158,981,171.94
5. Step 5: Solve for x
   x = 158,981,171.94/14,123.91
6. Step 6: Final answer
   x = 11,256.17