Finding the Fourth Proportional to 16,499.32, 22,773.24 and 9,429.90

Step by Step Solution

1. Step 1: Write the proportion equation
   16,499.32 : 22,773.24 = 9,429.90 : x
2. Step 2: Convert to fraction form
   16,499.32/22,773.24 = 9,429.90/x
3. Step 3: Cross multiply
   16,499.32x = 22,773.24 × 9,429.90
4. Step 4: Simplify right side
   16,499.32x = 214,749,375.88
5. Step 5: Solve for x
   x = 214,749,375.88/16,499.32
6. Step 6: Final answer
   x = 13,015.65