Finding the Fourth Proportional to 22,820.07, 31,491.34 and 12,748.65

Step by Step Solution

1. Step 1: Write the proportion equation
   22,820.07 : 31,491.34 = 12,748.65 : x
2. Step 2: Convert to fraction form
   22,820.07/31,491.34 = 12,748.65/x
3. Step 3: Cross multiply
   22,820.07x = 31,491.34 × 12,748.65
4. Step 4: Simplify right side
   22,820.07x = 401,472,071.69
5. Step 5: Solve for x
   x = 401,472,071.69/22,820.07
6. Step 6: Final answer
   x = 17,592.94