Finding the Fourth Proportional to 11,900.20, 16,417.02 and 8,365.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,900.20 : 16,417.02 = 8,365.72 : x
2. Step 2: Convert to fraction form
   11,900.20/16,417.02 = 8,365.72/x
3. Step 3: Cross multiply
   11,900.20x = 16,417.02 × 8,365.72
4. Step 4: Simplify right side
   11,900.20x = 137,340,192.55
5. Step 5: Solve for x
   x = 137,340,192.55/11,900.20
6. Step 6: Final answer
   x = 11,541.00