Finding the Fourth Proportional to 15,061.25, 20,784.53 and 8,347.89

Step by Step Solution

1. Step 1: Write the proportion equation
   15,061.25 : 20,784.53 = 8,347.89 : x
2. Step 2: Convert to fraction form
   15,061.25/20,784.53 = 8,347.89/x
3. Step 3: Cross multiply
   15,061.25x = 20,784.53 × 8,347.89
4. Step 4: Simplify right side
   15,061.25x = 173,506,974.62
5. Step 5: Solve for x
   x = 173,506,974.62/15,061.25
6. Step 6: Final answer
   x = 11,520.09