Finding the Fourth Proportional to 7,636.42, 10,537.72 and 4,279.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,636.42 : 10,537.72 = 4,279.20 : x
2. Step 2: Convert to fraction form
   7,636.42/10,537.72 = 4,279.20/x
3. Step 3: Cross multiply
   7,636.42x = 10,537.72 × 4,279.20
4. Step 4: Simplify right side
   7,636.42x = 45,093,011.42
5. Step 5: Solve for x
   x = 45,093,011.42/7,636.42
6. Step 6: Final answer
   x = 5,904.99