Finding the Fourth Proportional to 15,938.34, 21,994.59 and 8,864.61

Step by Step Solution

1. Step 1: Write the proportion equation
   15,938.34 : 21,994.59 = 8,864.61 : x
2. Step 2: Convert to fraction form
   15,938.34/21,994.59 = 8,864.61/x
3. Step 3: Cross multiply
   15,938.34x = 21,994.59 × 8,864.61
4. Step 4: Simplify right side
   15,938.34x = 194,973,462.46
5. Step 5: Solve for x
   x = 194,973,462.46/15,938.34
6. Step 6: Final answer
   x = 12,232.98