Finding the Fourth Proportional to 6,886.78, 9,503.72 and 3,742.98

Step by Step Solution

1. Step 1: Write the proportion equation
   6,886.78 : 9,503.72 = 3,742.98 : x
2. Step 2: Convert to fraction form
   6,886.78/9,503.72 = 3,742.98/x
3. Step 3: Cross multiply
   6,886.78x = 9,503.72 × 3,742.98
4. Step 4: Simplify right side
   6,886.78x = 35,572,233.89
5. Step 5: Solve for x
   x = 35,572,233.89/6,886.78
6. Step 6: Final answer
   x = 5,165.29