Finding the Fourth Proportional to 10,948.50, 15,109.29 and 5,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,948.50 : 15,109.29 = 5,980.50 : x
2. Step 2: Convert to fraction form
   10,948.50/15,109.29 = 5,980.50/x
3. Step 3: Cross multiply
   10,948.50x = 15,109.29 × 5,980.50
4. Step 4: Simplify right side
   10,948.50x = 90,361,108.85
5. Step 5: Solve for x
   x = 90,361,108.85/10,948.50
6. Step 6: Final answer
   x = 8,253.29