Finding the Fourth Proportional to 10,141.75, 15,217.98 and 7,199.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,141.75 : 15,217.98 = 7,199.20 : x
2. Step 2: Convert to fraction form
   10,141.75/15,217.98 = 7,199.20/x
3. Step 3: Cross multiply
   10,141.75x = 15,217.98 × 7,199.20
4. Step 4: Simplify right side
   10,141.75x = 109,557,169.53
5. Step 5: Solve for x
   x = 109,557,169.53/10,141.75
6. Step 6: Final answer
   x = 10,802.60