Finding the Fourth Proportional to 15,061.80, 20,785.33 and 8,347.54

Step by Step Solution

1. Step 1: Write the proportion equation
   15,061.80 : 20,785.33 = 8,347.54 : x
2. Step 2: Convert to fraction form
   15,061.80/20,785.33 = 8,347.54/x
3. Step 3: Cross multiply
   15,061.80x = 20,785.33 × 8,347.54
4. Step 4: Simplify right side
   15,061.80x = 173,506,300.76
5. Step 5: Solve for x
   x = 173,506,300.76/15,061.80
6. Step 6: Final answer
   x = 11,519.63