Finding the Fourth Proportional to 13,047.56, 19,571.27 and 3,186.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,047.56 : 19,571.27 = 3,186.89 : x
2. Step 2: Convert to fraction form
   13,047.56/19,571.27 = 3,186.89/x
3. Step 3: Cross multiply
   13,047.56x = 19,571.27 × 3,186.89
4. Step 4: Simplify right side
   13,047.56x = 62,371,370.86
5. Step 5: Solve for x
   x = 62,371,370.86/13,047.56
6. Step 6: Final answer
   x = 4,780.31