Finding the Fourth Proportional to 7,636.55, 10,538.31 and 4,279.35

Step by Step Solution

1. Step 1: Write the proportion equation
   7,636.55 : 10,538.31 = 4,279.35 : x
2. Step 2: Convert to fraction form
   7,636.55/10,538.31 = 4,279.35/x
3. Step 3: Cross multiply
   7,636.55x = 10,538.31 × 4,279.35
4. Step 4: Simplify right side
   7,636.55x = 45,097,116.90
5. Step 5: Solve for x
   x = 45,097,116.90/7,636.55
6. Step 6: Final answer
   x = 5,905.43