Finding the Fourth Proportional to 9,337.72, 12,886.05 and 5,145.97

Step by Step Solution

1. Step 1: Write the proportion equation
   9,337.72 : 12,886.05 = 5,145.97 : x
2. Step 2: Convert to fraction form
   9,337.72/12,886.05 = 5,145.97/x
3. Step 3: Cross multiply
   9,337.72x = 12,886.05 × 5,145.97
4. Step 4: Simplify right side
   9,337.72x = 66,311,226.72
5. Step 5: Solve for x
   x = 66,311,226.72/9,337.72
6. Step 6: Final answer
   x = 7,101.44