Finding the Fourth Proportional to 12,503.59, 18,760.56 and 5,479.95

Step by Step Solution

1. Step 1: Write the proportion equation
   12,503.59 : 18,760.56 = 5,479.95 : x
2. Step 2: Convert to fraction form
   12,503.59/18,760.56 = 5,479.95/x
3. Step 3: Cross multiply
   12,503.59x = 18,760.56 × 5,479.95
4. Step 4: Simplify right side
   12,503.59x = 102,806,930.77
5. Step 5: Solve for x
   x = 102,806,930.77/12,503.59
6. Step 6: Final answer
   x = 8,222.19