Finding the Fourth Proportional to 14,724.99, 20,321.82 and 9,061.20

Step by Step Solution

1. Step 1: Write the proportion equation
   14,724.99 : 20,321.82 = 9,061.20 : x
2. Step 2: Convert to fraction form
   14,724.99/20,321.82 = 9,061.20/x
3. Step 3: Cross multiply
   14,724.99x = 20,321.82 × 9,061.20
4. Step 4: Simplify right side
   14,724.99x = 184,140,075.38
5. Step 5: Solve for x
   x = 184,140,075.38/14,724.99
6. Step 6: Final answer
   x = 12,505.28