Finding the Fourth Proportional to 16,649.55, 22,980.24 and 10,985.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,649.55 : 22,980.24 = 10,985.31 : x
2. Step 2: Convert to fraction form
   16,649.55/22,980.24 = 10,985.31/x
3. Step 3: Cross multiply
   16,649.55x = 22,980.24 × 10,985.31
4. Step 4: Simplify right side
   16,649.55x = 252,445,060.27
5. Step 5: Solve for x
   x = 252,445,060.27/16,649.55
6. Step 6: Final answer
   x = 15,162.28