Finding the Fourth Proportional to 31,128.16, 46,683.76 and 10,348.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,128.16 : 46,683.76 = 10,348.96 : x
2. Step 2: Convert to fraction form
   31,128.16/46,683.76 = 10,348.96/x
3. Step 3: Cross multiply
   31,128.16x = 46,683.76 × 10,348.96
4. Step 4: Simplify right side
   31,128.16x = 483,128,364.89
5. Step 5: Solve for x
   x = 483,128,364.89/31,128.16
6. Step 6: Final answer
   x = 15,520.62