Finding the Fourth Proportional to 25,196.76, 34,767.68 and 15,123

Step by Step Solution

1. Step 1: Write the proportion equation
   25,196.76 : 34,767.68 = 15,123 : x
2. Step 2: Convert to fraction form
   25,196.76/34,767.68 = 15,123/x
3. Step 3: Cross multiply
   25,196.76x = 34,767.68 × 15,123
4. Step 4: Simplify right side
   25,196.76x = 525,791,624.64
5. Step 5: Solve for x
   x = 525,791,624.64/25,196.76
6. Step 6: Final answer
   x = 20,867.43