Finding the Fourth Proportional to 16,649.34, 22,980.68 and 9,939.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,649.34 : 22,980.68 = 9,939.50 : x
2. Step 2: Convert to fraction form
   16,649.34/22,980.68 = 9,939.50/x
3. Step 3: Cross multiply
   16,649.34x = 22,980.68 × 9,939.50
4. Step 4: Simplify right side
   16,649.34x = 228,416,468.86
5. Step 5: Solve for x
   x = 228,416,468.86/16,649.34
6. Step 6: Final answer
   x = 13,719.25