Finding the Fourth Proportional to 6,109.48, 8,424.12 and 4,986.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,109.48 : 8,424.12 = 4,986.88 : x
2. Step 2: Convert to fraction form
   6,109.48/8,424.12 = 4,986.88/x
3. Step 3: Cross multiply
   6,109.48x = 8,424.12 × 4,986.88
4. Step 4: Simplify right side
   6,109.48x = 42,010,075.55
5. Step 5: Solve for x
   x = 42,010,075.55/6,109.48
6. Step 6: Final answer
   x = 6,876.21