Finding the Fourth Proportional to 22,667.74, 34,007.99 and 7,878.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,667.74 : 34,007.99 = 7,878.15 : x
2. Step 2: Convert to fraction form
   22,667.74/34,007.99 = 7,878.15/x
3. Step 3: Cross multiply
   22,667.74x = 34,007.99 × 7,878.15
4. Step 4: Simplify right side
   22,667.74x = 267,920,007.03
5. Step 5: Solve for x
   x = 267,920,007.03/22,667.74
6. Step 6: Final answer
   x = 11,819.44