Finding the Fourth Proportional to 10,880.03, 16,320.91 and 4,640.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,880.03 : 16,320.91 = 4,640.10 : x
2. Step 2: Convert to fraction form
   10,880.03/16,320.91 = 4,640.10/x
3. Step 3: Cross multiply
   10,880.03x = 16,320.91 × 4,640.10
4. Step 4: Simplify right side
   10,880.03x = 75,730,572.89
5. Step 5: Solve for x
   x = 75,730,572.89/10,880.03
6. Step 6: Final answer
   x = 6,960.51