Finding the Fourth Proportional to 10,247.62, 15,368.18 and 3,320.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,247.62 : 15,368.18 = 3,320.50 : x
2. Step 2: Convert to fraction form
   10,247.62/15,368.18 = 3,320.50/x
3. Step 3: Cross multiply
   10,247.62x = 15,368.18 × 3,320.50
4. Step 4: Simplify right side
   10,247.62x = 51,030,041.69
5. Step 5: Solve for x
   x = 51,030,041.69/10,247.62
6. Step 6: Final answer
   x = 4,979.70