Finding the Fourth Proportional to 15,225.48, 21,004.61 and 8,851.59

Step by Step Solution

1. Step 1: Write the proportion equation
   15,225.48 : 21,004.61 = 8,851.59 : x
2. Step 2: Convert to fraction form
   15,225.48/21,004.61 = 8,851.59/x
3. Step 3: Cross multiply
   15,225.48x = 21,004.61 × 8,851.59
4. Step 4: Simplify right side
   15,225.48x = 185,924,151.57
5. Step 5: Solve for x
   x = 185,924,151.57/15,225.48
6. Step 6: Final answer
   x = 12,211.38