Finding the Fourth Proportional to 15,925.55, 21,976.72 and 8,851.82

Step by Step Solution

1. Step 1: Write the proportion equation
   15,925.55 : 21,976.72 = 8,851.82 : x
2. Step 2: Convert to fraction form
   15,925.55/21,976.72 = 8,851.82/x
3. Step 3: Cross multiply
   15,925.55x = 21,976.72 × 8,851.82
4. Step 4: Simplify right side
   15,925.55x = 194,533,837.62
5. Step 5: Solve for x
   x = 194,533,837.62/15,925.55
6. Step 6: Final answer
   x = 12,215.21