Finding the Fourth Proportional to 14,111.88, 19,471.78 and 9,141

Step by Step Solution

1. Step 1: Write the proportion equation
   14,111.88 : 19,471.78 = 9,141 : x
2. Step 2: Convert to fraction form
   14,111.88/19,471.78 = 9,141/x
3. Step 3: Cross multiply
   14,111.88x = 19,471.78 × 9,141
4. Step 4: Simplify right side
   14,111.88x = 177,991,540.98
5. Step 5: Solve for x
   x = 177,991,540.98/14,111.88
6. Step 6: Final answer
   x = 12,612.89