Finding the Fourth Proportional to 9,066.60, 13,612.05 and 5,786.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,066.60 : 13,612.05 = 5,786.10 : x
2. Step 2: Convert to fraction form
   9,066.60/13,612.05 = 5,786.10/x
3. Step 3: Cross multiply
   9,066.60x = 13,612.05 × 5,786.10
4. Step 4: Simplify right side
   9,066.60x = 78,760,682.51
5. Step 5: Solve for x
   x = 78,760,682.51/9,066.60
6. Step 6: Final answer
   x = 8,686.90