Finding the Fourth Proportional to 10,086.50, 15,130.56 and 3,161

Step by Step Solution

1. Step 1: Write the proportion equation
   10,086.50 : 15,130.56 = 3,161 : x
2. Step 2: Convert to fraction form
   10,086.50/15,130.56 = 3,161/x
3. Step 3: Cross multiply
   10,086.50x = 15,130.56 × 3,161
4. Step 4: Simplify right side
   10,086.50x = 47,827,700.16
5. Step 5: Solve for x
   x = 47,827,700.16/10,086.50
6. Step 6: Final answer
   x = 4,741.75