Finding the Fourth Proportional to 10,385.01, 15,580.75 and 3,721.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,385.01 : 15,580.75 = 3,721.57 : x
2. Step 2: Convert to fraction form
   10,385.01/15,580.75 = 3,721.57/x
3. Step 3: Cross multiply
   10,385.01x = 15,580.75 × 3,721.57
4. Step 4: Simplify right side
   10,385.01x = 57,984,851.78
5. Step 5: Solve for x
   x = 57,984,851.78/10,385.01
6. Step 6: Final answer
   x = 5,583.51