Finding the Fourth Proportional to 10,781.97, 14,875.56 and 8,789.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,781.97 : 14,875.56 = 8,789.10 : x
2. Step 2: Convert to fraction form
   10,781.97/14,875.56 = 8,789.10/x
3. Step 3: Cross multiply
   10,781.97x = 14,875.56 × 8,789.10
4. Step 4: Simplify right side
   10,781.97x = 130,742,784.40
5. Step 5: Solve for x
   x = 130,742,784.40/10,781.97
6. Step 6: Final answer
   x = 12,126.06