Finding the Fourth Proportional to 13,188.72, 19,785.03 and 3,828.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,188.72 : 19,785.03 = 3,828.81 : x
2. Step 2: Convert to fraction form
   13,188.72/19,785.03 = 3,828.81/x
3. Step 3: Cross multiply
   13,188.72x = 19,785.03 × 3,828.81
4. Step 4: Simplify right side
   13,188.72x = 75,753,157.81
5. Step 5: Solve for x
   x = 75,753,157.81/13,188.72
6. Step 6: Final answer
   x = 5,743.79