Finding the Fourth Proportional to 10,311, 15,469.56 and 5,931.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,311 : 15,469.56 = 5,931.60 : x
2. Step 2: Convert to fraction form
   10,311/15,469.56 = 5,931.60/x
3. Step 3: Cross multiply
   10,311x = 15,469.56 × 5,931.60
4. Step 4: Simplify right side
   10,311x = 91,759,242.10
5. Step 5: Solve for x
   x = 91,759,242.10/10,311
6. Step 6: Final answer
   x = 8,899.16