Finding the Fourth Proportional to 7,816.76, 10,787.39 and 4,280.00

Step by Step Solution

1. Step 1: Write the proportion equation
   7,816.76 : 10,787.39 = 4,280.00 : x
2. Step 2: Convert to fraction form
   7,816.76/10,787.39 = 4,280.00/x
3. Step 3: Cross multiply
   7,816.76x = 10,787.39 × 4,280.00
4. Step 4: Simplify right side
   7,816.76x = 46,169,953.86
5. Step 5: Solve for x
   x = 46,169,953.86/7,816.76
6. Step 6: Final answer
   x = 5,906.54