Finding the Fourth Proportional to 9,321.08, 12,862.50 and 5,783

Step by Step Solution

1. Step 1: Write the proportion equation
   9,321.08 : 12,862.50 = 5,783 : x
2. Step 2: Convert to fraction form
   9,321.08/12,862.50 = 5,783/x
3. Step 3: Cross multiply
   9,321.08x = 12,862.50 × 5,783
4. Step 4: Simplify right side
   9,321.08x = 74,383,837.50
5. Step 5: Solve for x
   x = 74,383,837.50/9,321.08
6. Step 6: Final answer
   x = 7,980.17