Finding the Fourth Proportional to 10,816.62, 16,221.69 and 3,889.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,816.62 : 16,221.69 = 3,889.50 : x
2. Step 2: Convert to fraction form
   10,816.62/16,221.69 = 3,889.50/x
3. Step 3: Cross multiply
   10,816.62x = 16,221.69 × 3,889.50
4. Step 4: Simplify right side
   10,816.62x = 63,094,263.26
5. Step 5: Solve for x
   x = 63,094,263.26/10,816.62
6. Step 6: Final answer
   x = 5,833.08