Finding the Fourth Proportional to 10,287.91, 15,432.59 and 4,364.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,287.91 : 15,432.59 = 4,364.12 : x
2. Step 2: Convert to fraction form
   10,287.91/15,432.59 = 4,364.12/x
3. Step 3: Cross multiply
   10,287.91x = 15,432.59 × 4,364.12
4. Step 4: Simplify right side
   10,287.91x = 67,349,738.32
5. Step 5: Solve for x
   x = 67,349,738.32/10,287.91
6. Step 6: Final answer
   x = 6,546.49