Finding the Fourth Proportional to 22,385.70, 30,889.83 and 12,952.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,385.70 : 30,889.83 = 12,952.50 : x
2. Step 2: Convert to fraction form
   22,385.70/30,889.83 = 12,952.50/x
3. Step 3: Cross multiply
   22,385.70x = 30,889.83 × 12,952.50
4. Step 4: Simplify right side
   22,385.70x = 400,100,523.08
5. Step 5: Solve for x
   x = 400,100,523.08/22,385.70
6. Step 6: Final answer
   x = 17,873.04