Finding the Fourth Proportional to 7,196.18, 10,787.35 and 3,687.85

Step by Step Solution

1. Step 1: Write the proportion equation
   7,196.18 : 10,787.35 = 3,687.85 : x
2. Step 2: Convert to fraction form
   7,196.18/10,787.35 = 3,687.85/x
3. Step 3: Cross multiply
   7,196.18x = 10,787.35 × 3,687.85
4. Step 4: Simplify right side
   7,196.18x = 39,782,092.51
5. Step 5: Solve for x
   x = 39,782,092.51/7,196.18
6. Step 6: Final answer
   x = 5,528.22