Finding the Fourth Proportional to 10,781.30, 14,888.00 and 8,124.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,781.30 : 14,888.00 = 8,124.10 : x
2. Step 2: Convert to fraction form
   10,781.30/14,888.00 = 8,124.10/x
3. Step 3: Cross multiply
   10,781.30x = 14,888.00 × 8,124.10
4. Step 4: Simplify right side
   10,781.30x = 120,951,583.89
5. Step 5: Solve for x
   x = 120,951,583.89/10,781.30
6. Step 6: Final answer
   x = 11,218.64