Finding the Fourth Proportional to 12,245.72, 18,368.64 and 3,011.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,245.72 : 18,368.64 = 3,011.72 : x
2. Step 2: Convert to fraction form
   12,245.72/18,368.64 = 3,011.72/x
3. Step 3: Cross multiply
   12,245.72x = 18,368.64 × 3,011.72
4. Step 4: Simplify right side
   12,245.72x = 55,321,200.46
5. Step 5: Solve for x
   x = 55,321,200.46/12,245.72
6. Step 6: Final answer
   x = 4,517.59