Finding the Fourth Proportional to 9,146.42, 12,623.08 and 5,167.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,146.42 : 12,623.08 = 5,167.78 : x
2. Step 2: Convert to fraction form
   9,146.42/12,623.08 = 5,167.78/x
3. Step 3: Cross multiply
   9,146.42x = 12,623.08 × 5,167.78
4. Step 4: Simplify right side
   9,146.42x = 65,233,300.36
5. Step 5: Solve for x
   x = 65,233,300.36/9,146.42
6. Step 6: Final answer
   x = 7,132.11