Finding the Fourth Proportional to 9,518.72, 13,140.60 and 5,983.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,518.72 : 13,140.60 = 5,983.88 : x
2. Step 2: Convert to fraction form
   9,518.72/13,140.60 = 5,983.88/x
3. Step 3: Cross multiply
   9,518.72x = 13,140.60 × 5,983.88
4. Step 4: Simplify right side
   9,518.72x = 78,631,773.53
5. Step 5: Solve for x
   x = 78,631,773.53/9,518.72
6. Step 6: Final answer
   x = 8,260.75