Finding the Fourth Proportional to 29,016.18, 39,781.55 and 28,491.30

Step by Step Solution

1. Step 1: Write the proportion equation
   29,016.18 : 39,781.55 = 28,491.30 : x
2. Step 2: Convert to fraction form
   29,016.18/39,781.55 = 28,491.30/x
3. Step 3: Cross multiply
   29,016.18x = 39,781.55 × 28,491.30
4. Step 4: Simplify right side
   29,016.18x = 1,133,428,075.52
5. Step 5: Solve for x
   x = 1,133,428,075.52/29,016.18
6. Step 6: Final answer
   x = 39,061.93