Finding the Fourth Proportional to 22,667.61, 34,007.79 and 7,878.03

Step by Step Solution

1. Step 1: Write the proportion equation
   22,667.61 : 34,007.79 = 7,878.03 : x
2. Step 2: Convert to fraction form
   22,667.61/34,007.79 = 7,878.03/x
3. Step 3: Cross multiply
   22,667.61x = 34,007.79 × 7,878.03
4. Step 4: Simplify right side
   22,667.61x = 267,914,389.85
5. Step 5: Solve for x
   x = 267,914,389.85/22,667.61
6. Step 6: Final answer
   x = 11,819.26