Finding the Fourth Proportional to 15,897.72, 21,938.52 and 8,823.98

Step by Step Solution

1. Step 1: Write the proportion equation
   15,897.72 : 21,938.52 = 8,823.98 : x
2. Step 2: Convert to fraction form
   15,897.72/21,938.52 = 8,823.98/x
3. Step 3: Cross multiply
   15,897.72x = 21,938.52 × 8,823.98
4. Step 4: Simplify right side
   15,897.72x = 193,585,061.71
5. Step 5: Solve for x
   x = 193,585,061.71/15,897.72
6. Step 6: Final answer
   x = 12,176.91