Finding the Fourth Proportional to 5,548.32, 7,656.84 and 3,780.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,548.32 : 7,656.84 = 3,780.72 : x
2. Step 2: Convert to fraction form
   5,548.32/7,656.84 = 3,780.72/x
3. Step 3: Cross multiply
   5,548.32x = 7,656.84 × 3,780.72
4. Step 4: Simplify right side
   5,548.32x = 28,948,368.12
5. Step 5: Solve for x
   x = 28,948,368.12/5,548.32
6. Step 6: Final answer
   x = 5,217.50