Finding the Fourth Proportional to 22,819.93, 31,491.56 and 12,748.75

Step by Step Solution

1. Step 1: Write the proportion equation
   22,819.93 : 31,491.56 = 12,748.75 : x
2. Step 2: Convert to fraction form
   22,819.93/31,491.56 = 12,748.75/x
3. Step 3: Cross multiply
   22,819.93x = 31,491.56 × 12,748.75
4. Step 4: Simplify right side
   22,819.93x = 401,477,978.69
5. Step 5: Solve for x
   x = 401,477,978.69/22,819.93
6. Step 6: Final answer
   x = 17,593.31