Finding the Fourth Proportional to 12,984.29, 19,458.20 and 5,583.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,984.29 : 19,458.20 = 5,583.18 : x
2. Step 2: Convert to fraction form
   12,984.29/19,458.20 = 5,583.18/x
3. Step 3: Cross multiply
   12,984.29x = 19,458.20 × 5,583.18
4. Step 4: Simplify right side
   12,984.29x = 108,638,647.03
5. Step 5: Solve for x
   x = 108,638,647.03/12,984.29
6. Step 6: Final answer
   x = 8,366.93