Finding the Fourth Proportional to 6,886.72, 9,503.88 and 3,902.48

Step by Step Solution

1. Step 1: Write the proportion equation
   6,886.72 : 9,503.88 = 3,902.48 : x
2. Step 2: Convert to fraction form
   6,886.72/9,503.88 = 3,902.48/x
3. Step 3: Cross multiply
   6,886.72x = 9,503.88 × 3,902.48
4. Step 4: Simplify right side
   6,886.72x = 37,088,654.10
5. Step 5: Solve for x
   x = 37,088,654.10/6,886.72
6. Step 6: Final answer
   x = 5,385.53