Finding the Fourth Proportional to 8,348.72, 12,498.76 and 4,390.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,348.72 : 12,498.76 = 4,390.59 : x
2. Step 2: Convert to fraction form
   8,348.72/12,498.76 = 4,390.59/x
3. Step 3: Cross multiply
   8,348.72x = 12,498.76 × 4,390.59
4. Step 4: Simplify right side
   8,348.72x = 54,876,888.02
5. Step 5: Solve for x
   x = 54,876,888.02/8,348.72
6. Step 6: Final answer
   x = 6,573.09