Finding the Fourth Proportional to 6,936.02, 10,390.86 and 4,118.91

Step by Step Solution

1. Step 1: Write the proportion equation
   6,936.02 : 10,390.86 = 4,118.91 : x
2. Step 2: Convert to fraction form
   6,936.02/10,390.86 = 4,118.91/x
3. Step 3: Cross multiply
   6,936.02x = 10,390.86 × 4,118.91
4. Step 4: Simplify right side
   6,936.02x = 42,799,017.16
5. Step 5: Solve for x
   x = 42,799,017.16/6,936.02
6. Step 6: Final answer
   x = 6,170.54