Finding the Fourth Proportional to 20,699.01, 31,029.89 and 7,542.05

Step by Step Solution

1. Step 1: Write the proportion equation
   20,699.01 : 31,029.89 = 7,542.05 : x
2. Step 2: Convert to fraction form
   20,699.01/31,029.89 = 7,542.05/x
3. Step 3: Cross multiply
   20,699.01x = 31,029.89 × 7,542.05
4. Step 4: Simplify right side
   20,699.01x = 234,028,789.01
5. Step 5: Solve for x
   x = 234,028,789.01/20,699.01
6. Step 6: Final answer
   x = 11,306.28