Finding the Fourth Proportional to 6,091.48, 8,405.40 and 3,438.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,091.48 : 8,405.40 = 3,438.72 : x
2. Step 2: Convert to fraction form
   6,091.48/8,405.40 = 3,438.72/x
3. Step 3: Cross multiply
   6,091.48x = 8,405.40 × 3,438.72
4. Step 4: Simplify right side
   6,091.48x = 28,903,817.09
5. Step 5: Solve for x
   x = 28,903,817.09/6,091.48
6. Step 6: Final answer
   x = 4,744.96