Finding the Fourth Proportional to 2,931.30, 4,373.28 and 2,792.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,931.30 : 4,373.28 = 2,792.16 : x
2. Step 2: Convert to fraction form
   2,931.30/4,373.28 = 2,792.16/x
3. Step 3: Cross multiply
   2,931.30x = 4,373.28 × 2,792.16
4. Step 4: Simplify right side
   2,931.30x = 12,210,897.48
5. Step 5: Solve for x
   x = 12,210,897.48/2,931.30
6. Step 6: Final answer
   x = 4,165.69