Finding the Fourth Proportional to 22,820.44, 31,491.86 and 12,749.03

Step by Step Solution

1. Step 1: Write the proportion equation
   22,820.44 : 31,491.86 = 12,749.03 : x
2. Step 2: Convert to fraction form
   22,820.44/31,491.86 = 12,749.03/x
3. Step 3: Cross multiply
   22,820.44x = 31,491.86 × 12,749.03
4. Step 4: Simplify right side
   22,820.44x = 401,490,667.90
5. Step 5: Solve for x
   x = 401,490,667.90/22,820.44
6. Step 6: Final answer
   x = 17,593.47