Finding the Fourth Proportional to 6,530.42, 9,784.48 and 4,307.90

Step by Step Solution

1. Step 1: Write the proportion equation
   6,530.42 : 9,784.48 = 4,307.90 : x
2. Step 2: Convert to fraction form
   6,530.42/9,784.48 = 4,307.90/x
3. Step 3: Cross multiply
   6,530.42x = 9,784.48 × 4,307.90
4. Step 4: Simplify right side
   6,530.42x = 42,150,561.39
5. Step 5: Solve for x
   x = 42,150,561.39/6,530.42
6. Step 6: Final answer
   x = 6,454.49