Finding the Fourth Proportional to 6,106.08, 8,406.72 and 5,430.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,106.08 : 8,406.72 = 5,430.72 : x
2. Step 2: Convert to fraction form
   6,106.08/8,406.72 = 5,430.72/x
3. Step 3: Cross multiply
   6,106.08x = 8,406.72 × 5,430.72
4. Step 4: Simplify right side
   6,106.08x = 45,654,542.44
5. Step 5: Solve for x
   x = 45,654,542.44/6,106.08
6. Step 6: Final answer
   x = 7,476.90