Finding the Fourth Proportional to 11,663.16, 16,086.06 and 7,471.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,663.16 : 16,086.06 = 7,471.80 : x
2. Step 2: Convert to fraction form
   11,663.16/16,086.06 = 7,471.80/x
3. Step 3: Cross multiply
   11,663.16x = 16,086.06 × 7,471.80
4. Step 4: Simplify right side
   11,663.16x = 120,191,823.11
5. Step 5: Solve for x
   x = 120,191,823.11/11,663.16
6. Step 6: Final answer
   x = 10,305.25