Finding the Fourth Proportional to 8,470.79, 12,705.98 and 2,923.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,470.79 : 12,705.98 = 2,923.94 : x
2. Step 2: Convert to fraction form
   8,470.79/12,705.98 = 2,923.94/x
3. Step 3: Cross multiply
   8,470.79x = 12,705.98 × 2,923.94
4. Step 4: Simplify right side
   8,470.79x = 37,151,445.01
5. Step 5: Solve for x
   x = 37,151,445.01/8,470.79
6. Step 6: Final answer
   x = 4,385.83