Finding the Fourth Proportional to 10,722.96, 16,084.88 and 2,931.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,722.96 : 16,084.88 = 2,931.72 : x
2. Step 2: Convert to fraction form
   10,722.96/16,084.88 = 2,931.72/x
3. Step 3: Cross multiply
   10,722.96x = 16,084.88 × 2,931.72
4. Step 4: Simplify right side
   10,722.96x = 47,156,364.39
5. Step 5: Solve for x
   x = 47,156,364.39/10,722.96
6. Step 6: Final answer
   x = 4,397.70