Finding the Fourth Proportional to 14,417.98, 19,896.78 and 8,130.31

Step by Step Solution

1. Step 1: Write the proportion equation
   14,417.98 : 19,896.78 = 8,130.31 : x
2. Step 2: Convert to fraction form
   14,417.98/19,896.78 = 8,130.31/x
3. Step 3: Cross multiply
   14,417.98x = 19,896.78 × 8,130.31
4. Step 4: Simplify right side
   14,417.98x = 161,766,989.40
5. Step 5: Solve for x
   x = 161,766,989.40/14,417.98
6. Step 6: Final answer
   x = 11,219.81