Finding the Fourth Proportional to 10,847.20, 14,968.32 and 7,315.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,847.20 : 14,968.32 = 7,315.20 : x
2. Step 2: Convert to fraction form
   10,847.20/14,968.32 = 7,315.20/x
3. Step 3: Cross multiply
   10,847.20x = 14,968.32 × 7,315.20
4. Step 4: Simplify right side
   10,847.20x = 109,496,254.46
5. Step 5: Solve for x
   x = 109,496,254.46/10,847.20
6. Step 6: Final answer
   x = 10,094.43