Finding the Fourth Proportional to 34,651.83, 51,978.56 and 11,280.09

Step by Step Solution

1. Step 1: Write the proportion equation
   34,651.83 : 51,978.56 = 11,280.09 : x
2. Step 2: Convert to fraction form
   34,651.83/51,978.56 = 11,280.09/x
3. Step 3: Cross multiply
   34,651.83x = 51,978.56 × 11,280.09
4. Step 4: Simplify right side
   34,651.83x = 586,322,834.87
5. Step 5: Solve for x
   x = 586,322,834.87/34,651.83
6. Step 6: Final answer
   x = 16,920.40