Finding the Fourth Proportional to 11,271.98, 16,908.78 and 3,479.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,271.98 : 16,908.78 = 3,479.78 : x
2. Step 2: Convert to fraction form
   11,271.98/16,908.78 = 3,479.78/x
3. Step 3: Cross multiply
   11,271.98x = 16,908.78 × 3,479.78
4. Step 4: Simplify right side
   11,271.98x = 58,838,834.47
5. Step 5: Solve for x
   x = 58,838,834.47/11,271.98
6. Step 6: Final answer
   x = 5,219.92