Finding the Fourth Proportional to 42,761.98, 64,149 and 13,182.22

Step by Step Solution

1. Step 1: Write the proportion equation
   42,761.98 : 64,149 = 13,182.22 : x
2. Step 2: Convert to fraction form
   42,761.98/64,149 = 13,182.22/x
3. Step 3: Cross multiply
   42,761.98x = 64,149 × 13,182.22
4. Step 4: Simplify right side
   42,761.98x = 845,626,230.78
5. Step 5: Solve for x
   x = 845,626,230.78/42,761.98
6. Step 6: Final answer
   x = 19,775.19