Finding the Fourth Proportional to 10,904.51, 16,355.00 and 3,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,904.51 : 16,355.00 = 3,111.50 : x
2. Step 2: Convert to fraction form
   10,904.51/16,355.00 = 3,111.50/x
3. Step 3: Cross multiply
   10,904.51x = 16,355.00 × 3,111.50
4. Step 4: Simplify right side
   10,904.51x = 50,888,508.50
5. Step 5: Solve for x
   x = 50,888,508.50/10,904.51
6. Step 6: Final answer
   x = 4,666.74