Finding the Fourth Proportional to 8,488.61, 12,725.12 and 2,938.07

Step by Step Solution

1. Step 1: Write the proportion equation
   8,488.61 : 12,725.12 = 2,938.07 : x
2. Step 2: Convert to fraction form
   8,488.61/12,725.12 = 2,938.07/x
3. Step 3: Cross multiply
   8,488.61x = 12,725.12 × 2,938.07
4. Step 4: Simplify right side
   8,488.61x = 37,387,283.82
5. Step 5: Solve for x
   x = 37,387,283.82/8,488.61
6. Step 6: Final answer
   x = 4,404.41