Finding the Fourth Proportional to 12,111.66, 16,711.11 and 7,394.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.66 : 16,711.11 = 7,394.22 : x
2. Step 2: Convert to fraction form
   12,111.66/16,711.11 = 7,394.22/x
3. Step 3: Cross multiply
   12,111.66x = 16,711.11 × 7,394.22
4. Step 4: Simplify right side
   12,111.66x = 123,565,623.78
5. Step 5: Solve for x
   x = 123,565,623.78/12,111.66
6. Step 6: Final answer
   x = 10,202.20