Finding the Fourth Proportional to 12,066.86, 16,641.63 and 8,708.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,066.86 : 16,641.63 = 8,708.78 : x
2. Step 2: Convert to fraction form
   12,066.86/16,641.63 = 8,708.78/x
3. Step 3: Cross multiply
   12,066.86x = 16,641.63 × 8,708.78
4. Step 4: Simplify right side
   12,066.86x = 144,928,294.51
5. Step 5: Solve for x
   x = 144,928,294.51/12,066.86
6. Step 6: Final answer
   x = 12,010.44