Finding the Fourth Proportional to 16,767.91, 25,155.75 and 4,921.20

Step by Step Solution

1. Step 1: Write the proportion equation
   16,767.91 : 25,155.75 = 4,921.20 : x
2. Step 2: Convert to fraction form
   16,767.91/25,155.75 = 4,921.20/x
3. Step 3: Cross multiply
   16,767.91x = 25,155.75 × 4,921.20
4. Step 4: Simplify right side
   16,767.91x = 123,796,476.90
5. Step 5: Solve for x
   x = 123,796,476.90/16,767.91
6. Step 6: Final answer
   x = 7,382.94