Finding the Fourth Proportional to 39,744.72, 59,610.60 and 13,090.46

Step by Step Solution

1. Step 1: Write the proportion equation
   39,744.72 : 59,610.60 = 13,090.46 : x
2. Step 2: Convert to fraction form
   39,744.72/59,610.60 = 13,090.46/x
3. Step 3: Cross multiply
   39,744.72x = 59,610.60 × 13,090.46
4. Step 4: Simplify right side
   39,744.72x = 780,329,876.82
5. Step 5: Solve for x
   x = 780,329,876.82/39,744.72
6. Step 6: Final answer
   x = 19,633.55