Finding the Fourth Proportional to 14,752.89, 20,345.31 and 10,985.31

Step by Step Solution

1. Step 1: Write the proportion equation
   14,752.89 : 20,345.31 = 10,985.31 : x
2. Step 2: Convert to fraction form
   14,752.89/20,345.31 = 10,985.31/x
3. Step 3: Cross multiply
   14,752.89x = 20,345.31 × 10,985.31
4. Step 4: Simplify right side
   14,752.89x = 223,499,537.40
5. Step 5: Solve for x
   x = 223,499,537.40/14,752.89
6. Step 6: Final answer
   x = 15,149.54