Finding the Fourth Proportional to 41,109.31, 61,665.69 and 13,028.75

Step by Step Solution

1. Step 1: Write the proportion equation
   41,109.31 : 61,665.69 = 13,028.75 : x
2. Step 2: Convert to fraction form
   41,109.31/61,665.69 = 13,028.75/x
3. Step 3: Cross multiply
   41,109.31x = 61,665.69 × 13,028.75
4. Step 4: Simplify right side
   41,109.31x = 803,426,858.59
5. Step 5: Solve for x
   x = 803,426,858.59/41,109.31
6. Step 6: Final answer
   x = 19,543.67