Finding the Fourth Proportional to 22,783.28, 34,179.98 and 6,990.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,783.28 : 34,179.98 = 6,990.50 : x
2. Step 2: Convert to fraction form
   22,783.28/34,179.98 = 6,990.50/x
3. Step 3: Cross multiply
   22,783.28x = 34,179.98 × 6,990.50
4. Step 4: Simplify right side
   22,783.28x = 238,935,200.69
5. Step 5: Solve for x
   x = 238,935,200.69/22,783.28
6. Step 6: Final answer
   x = 10,487.31