Finding the Fourth Proportional to 22,009.30, 30,900.50 and 22,009.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,009.30 : 30,900.50 = 22,009.30 : x
2. Step 2: Convert to fraction form
   22,009.30/30,900.50 = 22,009.30/x
3. Step 3: Cross multiply
   22,009.30x = 30,900.50 × 22,009.30
4. Step 4: Simplify right side
   22,009.30x = 680,098,374.65
5. Step 5: Solve for x
   x = 680,098,374.65/22,009.30
6. Step 6: Final answer
   x = 30,900.50