Finding the Fourth Proportional to 8,784.72, 12,118.80 and 5,245.92

Step by Step Solution

1. Step 1: Write the proportion equation
   8,784.72 : 12,118.80 = 5,245.92 : x
2. Step 2: Convert to fraction form
   8,784.72/12,118.80 = 5,245.92/x
3. Step 3: Cross multiply
   8,784.72x = 12,118.80 × 5,245.92
4. Step 4: Simplify right side
   8,784.72x = 63,574,255.30
5. Step 5: Solve for x
   x = 63,574,255.30/8,784.72
6. Step 6: Final answer
   x = 7,236.91