Finding the Fourth Proportional to 9,368.72, 12,930.24 and 5,785.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,368.72 : 12,930.24 = 5,785.76 : x
2. Step 2: Convert to fraction form
   9,368.72/12,930.24 = 5,785.76/x
3. Step 3: Cross multiply
   9,368.72x = 12,930.24 × 5,785.76
4. Step 4: Simplify right side
   9,368.72x = 74,811,265.38
5. Step 5: Solve for x
   x = 74,811,265.38/9,368.72
6. Step 6: Final answer
   x = 7,985.22