Finding the Fourth Proportional to 15,061.55, 20,784.95 and 8,347.05

Step by Step Solution

1. Step 1: Write the proportion equation
   15,061.55 : 20,784.95 = 8,347.05 : x
2. Step 2: Convert to fraction form
   15,061.55/20,784.95 = 8,347.05/x
3. Step 3: Cross multiply
   15,061.55x = 20,784.95 × 8,347.05
4. Step 4: Simplify right side
   15,061.55x = 173,493,053.42
5. Step 5: Solve for x
   x = 173,493,053.42/15,061.55
6. Step 6: Final answer
   x = 11,518.94