Finding the Fourth Proportional to 11,061.15, 16,566.20 and 6,668.92

Step by Step Solution

1. Step 1: Write the proportion equation
   11,061.15 : 16,566.20 = 6,668.92 : x
2. Step 2: Convert to fraction form
   11,061.15/16,566.20 = 6,668.92/x
3. Step 3: Cross multiply
   11,061.15x = 16,566.20 × 6,668.92
4. Step 4: Simplify right side
   11,061.15x = 110,478,662.50
5. Step 5: Solve for x
   x = 110,478,662.50/11,061.15
6. Step 6: Final answer
   x = 9,987.99