Finding the Fourth Proportional to 11,411.60, 15,711.66 and 10,066.05

Step by Step Solution

1. Step 1: Write the proportion equation
   11,411.60 : 15,711.66 = 10,066.05 : x
2. Step 2: Convert to fraction form
   11,411.60/15,711.66 = 10,066.05/x
3. Step 3: Cross multiply
   11,411.60x = 15,711.66 × 10,066.05
4. Step 4: Simplify right side
   11,411.60x = 158,154,355.14
5. Step 5: Solve for x
   x = 158,154,355.14/11,411.60
6. Step 6: Final answer
   x = 13,859.09