Finding the Fourth Proportional to 22,535.91, 31,066.56 and 15,801.21

Step by Step Solution

1. Step 1: Write the proportion equation
   22,535.91 : 31,066.56 = 15,801.21 : x
2. Step 2: Convert to fraction form
   22,535.91/31,066.56 = 15,801.21/x
3. Step 3: Cross multiply
   22,535.91x = 31,066.56 × 15,801.21
4. Step 4: Simplify right side
   22,535.91x = 490,889,238.54
5. Step 5: Solve for x
   x = 490,889,238.54/22,535.91
6. Step 6: Final answer
   x = 21,782.53