Finding the Fourth Proportional to 14,478.17, 19,978.22 and 8,103.87

Step by Step Solution

1. Step 1: Write the proportion equation
   14,478.17 : 19,978.22 = 8,103.87 : x
2. Step 2: Convert to fraction form
   14,478.17/19,978.22 = 8,103.87/x
3. Step 3: Cross multiply
   14,478.17x = 19,978.22 × 8,103.87
4. Step 4: Simplify right side
   14,478.17x = 161,900,951.37
5. Step 5: Solve for x
   x = 161,900,951.37/14,478.17
6. Step 6: Final answer
   x = 11,182.42