Finding the Fourth Proportional to 14,419.59, 19,899.03 and 8,131.96

Step by Step Solution

1. Step 1: Write the proportion equation
   14,419.59 : 19,899.03 = 8,131.96 : x
2. Step 2: Convert to fraction form
   14,419.59/19,899.03 = 8,131.96/x
3. Step 3: Cross multiply
   14,419.59x = 19,899.03 × 8,131.96
4. Step 4: Simplify right side
   14,419.59x = 161,818,116.00
5. Step 5: Solve for x
   x = 161,818,116.00/14,419.59
6. Step 6: Final answer
   x = 11,222.10