Finding the Fourth Proportional to 10,886.43, 16,325.54 and 4,642.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,886.43 : 16,325.54 = 4,642.55 : x
2. Step 2: Convert to fraction form
   10,886.43/16,325.54 = 4,642.55/x
3. Step 3: Cross multiply
   10,886.43x = 16,325.54 × 4,642.55
4. Step 4: Simplify right side
   10,886.43x = 75,792,030.89
5. Step 5: Solve for x
   x = 75,792,030.89/10,886.43
6. Step 6: Final answer
   x = 6,962.06