Finding the Fourth Proportional to 12,298.20, 18,432.90 and 5,710.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,298.20 : 18,432.90 = 5,710.50 : x
2. Step 2: Convert to fraction form
   12,298.20/18,432.90 = 5,710.50/x
3. Step 3: Cross multiply
   12,298.20x = 18,432.90 × 5,710.50
4. Step 4: Simplify right side
   12,298.20x = 105,261,075.45
5. Step 5: Solve for x
   x = 105,261,075.45/12,298.20
6. Step 6: Final answer
   x = 8,559.06