Finding the Fourth Proportional to 3,635.81, 5,026.72 and 2,799.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,635.81 : 5,026.72 = 2,799.28 : x
2. Step 2: Convert to fraction form
   3,635.81/5,026.72 = 2,799.28/x
3. Step 3: Cross multiply
   3,635.81x = 5,026.72 × 2,799.28
4. Step 4: Simplify right side
   3,635.81x = 14,071,196.76
5. Step 5: Solve for x
   x = 14,071,196.76/3,635.81
6. Step 6: Final answer
   x = 3,870.17