Finding the Fourth Proportional to 13,040.28, 19,563.30 and 3,807

Step by Step Solution

1. Step 1: Write the proportion equation
   13,040.28 : 19,563.30 = 3,807 : x
2. Step 2: Convert to fraction form
   13,040.28/19,563.30 = 3,807/x
3. Step 3: Cross multiply
   13,040.28x = 19,563.30 × 3,807
4. Step 4: Simplify right side
   13,040.28x = 74,477,483.10
5. Step 5: Solve for x
   x = 74,477,483.10/13,040.28
6. Step 6: Final answer
   x = 5,711.34