Finding the Fourth Proportional to 8,013.55, 12,021.29 and 3,336.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,013.55 : 12,021.29 = 3,336.72 : x
2. Step 2: Convert to fraction form
   8,013.55/12,021.29 = 3,336.72/x
3. Step 3: Cross multiply
   8,013.55x = 12,021.29 × 3,336.72
4. Step 4: Simplify right side
   8,013.55x = 40,111,678.77
5. Step 5: Solve for x
   x = 40,111,678.77/8,013.55
6. Step 6: Final answer
   x = 5,005.48