Finding the Fourth Proportional to 52,749.50, 79,124.78 and 13,306.61

Step by Step Solution

1. Step 1: Write the proportion equation
   52,749.50 : 79,124.78 = 13,306.61 : x
2. Step 2: Convert to fraction form
   52,749.50/79,124.78 = 13,306.61/x
3. Step 3: Cross multiply
   52,749.50x = 79,124.78 × 13,306.61
4. Step 4: Simplify right side
   52,749.50x = 1,052,882,819.87
5. Step 5: Solve for x
   x = 1,052,882,819.87/52,749.50
6. Step 6: Final answer
   x = 19,960.05