Finding the Fourth Proportional to 22,050.74, 30,428.45 and 12,491.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,050.74 : 30,428.45 = 12,491.59 : x
2. Step 2: Convert to fraction form
   22,050.74/30,428.45 = 12,491.59/x
3. Step 3: Cross multiply
   22,050.74x = 30,428.45 × 12,491.59
4. Step 4: Simplify right side
   22,050.74x = 380,099,721.74
5. Step 5: Solve for x
   x = 380,099,721.74/22,050.74
6. Step 6: Final answer
   x = 17,237.50