Finding the Fourth Proportional to 22,015.20, 32,964.48 and 13,238.04

Step by Step Solution

1. Step 1: Write the proportion equation
   22,015.20 : 32,964.48 = 13,238.04 : x
2. Step 2: Convert to fraction form
   22,015.20/32,964.48 = 13,238.04/x
3. Step 3: Cross multiply
   22,015.20x = 32,964.48 × 13,238.04
4. Step 4: Simplify right side
   22,015.20x = 436,385,104.82
5. Step 5: Solve for x
   x = 436,385,104.82/22,015.20
6. Step 6: Final answer
   x = 19,821.99