Finding the Fourth Proportional to 12,636.86, 18,941.94 and 4,734.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,636.86 : 18,941.94 = 4,734.20 : x
2. Step 2: Convert to fraction form
   12,636.86/18,941.94 = 4,734.20/x
3. Step 3: Cross multiply
   12,636.86x = 18,941.94 × 4,734.20
4. Step 4: Simplify right side
   12,636.86x = 89,674,979.70
5. Step 5: Solve for x
   x = 89,674,979.70/12,636.86
6. Step 6: Final answer
   x = 7,096.31