Finding the Fourth Proportional to 10,936.34, 16,407.12 and 3,540.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,936.34 : 16,407.12 = 3,540.80 : x
2. Step 2: Convert to fraction form
   10,936.34/16,407.12 = 3,540.80/x
3. Step 3: Cross multiply
   10,936.34x = 16,407.12 × 3,540.80
4. Step 4: Simplify right side
   10,936.34x = 58,094,371.51
5. Step 5: Solve for x
   x = 58,094,371.51/10,936.34
6. Step 6: Final answer
   x = 5,312.05