Finding the Fourth Proportional to 10,669.71, 16,004.86 and 2,878.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,669.71 : 16,004.86 = 2,878.50 : x
2. Step 2: Convert to fraction form
   10,669.71/16,004.86 = 2,878.50/x
3. Step 3: Cross multiply
   10,669.71x = 16,004.86 × 2,878.50
4. Step 4: Simplify right side
   10,669.71x = 46,069,982.31
5. Step 5: Solve for x
   x = 46,069,982.31/10,669.71
6. Step 6: Final answer
   x = 4,317.83