Finding the Fourth Proportional to 10,963.35, 16,340.81 and 10,340.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,963.35 : 16,340.81 = 10,340.60 : x
2. Step 2: Convert to fraction form
   10,963.35/16,340.81 = 10,340.60/x
3. Step 3: Cross multiply
   10,963.35x = 16,340.81 × 10,340.60
4. Step 4: Simplify right side
   10,963.35x = 168,973,646.48
5. Step 5: Solve for x
   x = 168,973,646.48/10,963.35
6. Step 6: Final answer
   x = 15,412.59