Finding the Fourth Proportional to 9,359.12, 12,915.65 and 5,167.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,359.12 : 12,915.65 = 5,167.37 : x
2. Step 2: Convert to fraction form
   9,359.12/12,915.65 = 5,167.37/x
3. Step 3: Cross multiply
   9,359.12x = 12,915.65 × 5,167.37
4. Step 4: Simplify right side
   9,359.12x = 66,739,916.50
5. Step 5: Solve for x
   x = 66,739,916.50/9,359.12
6. Step 6: Final answer
   x = 7,131.00