Finding the Fourth Proportional to 16,061.78, 22,159.90 and 9,345.98

Step by Step Solution

1. Step 1: Write the proportion equation
   16,061.78 : 22,159.90 = 9,345.98 : x
2. Step 2: Convert to fraction form
   16,061.78/22,159.90 = 9,345.98/x
3. Step 3: Cross multiply
   16,061.78x = 22,159.90 × 9,345.98
4. Step 4: Simplify right side
   16,061.78x = 207,105,982.20
5. Step 5: Solve for x
   x = 207,105,982.20/16,061.78
6. Step 6: Final answer
   x = 12,894.34