Finding the Fourth Proportional to 5,479,401.69, 8,216,672.91 and 2,920,139.61

Step by Step Solution

1. Step 1: Write the proportion equation
   5,479,401.69 : 8,216,672.91 = 2,920,139.61 : x
2. Step 2: Convert to fraction form
   5,479,401.69/8,216,672.91 = 2,920,139.61/x
3. Step 3: Cross multiply
   5,479,401.69x = 8,216,672.91 × 2,920,139.61
4. Step 4: Simplify right side
   5,479,401.69x = 23,993,832,026,904.96
5. Step 5: Solve for x
   x = 23,993,832,026,904.96/5,479,401.69
6. Step 6: Final answer
   x = 4,378,914.59