Finding the Fourth Proportional to 8,784.27, 13,172.15 and 3,240.23

Step by Step Solution

1. Step 1: Write the proportion equation
   8,784.27 : 13,172.15 = 3,240.23 : x
2. Step 2: Convert to fraction form
   8,784.27/13,172.15 = 3,240.23/x
3. Step 3: Cross multiply
   8,784.27x = 13,172.15 × 3,240.23
4. Step 4: Simplify right side
   8,784.27x = 42,680,737.83
5. Step 5: Solve for x
   x = 42,680,737.83/8,784.27
6. Step 6: Final answer
   x = 4,858.77