Finding the Fourth Proportional to 13,672.72, 20,510.24 and 3,812.01

Step by Step Solution

1. Step 1: Write the proportion equation
   13,672.72 : 20,510.24 = 3,812.01 : x
2. Step 2: Convert to fraction form
   13,672.72/20,510.24 = 3,812.01/x
3. Step 3: Cross multiply
   13,672.72x = 20,510.24 × 3,812.01
4. Step 4: Simplify right side
   13,672.72x = 78,185,235.22
5. Step 5: Solve for x
   x = 78,185,235.22/13,672.72
6. Step 6: Final answer
   x = 5,718.34