Finding the Fourth Proportional to 15,796.50, 21,798.14 and 8,722.86

Step by Step Solution

1. Step 1: Write the proportion equation
   15,796.50 : 21,798.14 = 8,722.86 : x
2. Step 2: Convert to fraction form
   15,796.50/21,798.14 = 8,722.86/x
3. Step 3: Cross multiply
   15,796.50x = 21,798.14 × 8,722.86
4. Step 4: Simplify right side
   15,796.50x = 190,142,123.48
5. Step 5: Solve for x
   x = 190,142,123.48/15,796.50
6. Step 6: Final answer
   x = 12,036.98