Finding the Fourth Proportional to 10,906.41, 16,351.67 and 4,980.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,906.41 : 16,351.67 = 4,980.10 : x
2. Step 2: Convert to fraction form
   10,906.41/16,351.67 = 4,980.10/x
3. Step 3: Cross multiply
   10,906.41x = 16,351.67 × 4,980.10
4. Step 4: Simplify right side
   10,906.41x = 81,432,954.00
5. Step 5: Solve for x
   x = 81,432,954.00/10,906.41
6. Step 6: Final answer
   x = 7,466.52