Finding the Fourth Proportional to 10,131.89, 15,200.08 and 3,891.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.89 : 15,200.08 = 3,891.90 : x
2. Step 2: Convert to fraction form
   10,131.89/15,200.08 = 3,891.90/x
3. Step 3: Cross multiply
   10,131.89x = 15,200.08 × 3,891.90
4. Step 4: Simplify right side
   10,131.89x = 59,157,191.35
5. Step 5: Solve for x
   x = 59,157,191.35/10,131.89
6. Step 6: Final answer
   x = 5,838.71