Finding the Fourth Proportional to 12,280.01, 18,422.78 and 4,488.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,280.01 : 18,422.78 = 4,488.75 : x
2. Step 2: Convert to fraction form
   12,280.01/18,422.78 = 4,488.75/x
3. Step 3: Cross multiply
   12,280.01x = 18,422.78 × 4,488.75
4. Step 4: Simplify right side
   12,280.01x = 82,695,231.28
5. Step 5: Solve for x
   x = 82,695,231.28/12,280.01
6. Step 6: Final answer
   x = 6,734.14