Finding the Fourth Proportional to 13,047.86, 19,572.85 and 3,687.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,047.86 : 19,572.85 = 3,687.96 : x
2. Step 2: Convert to fraction form
   13,047.86/19,572.85 = 3,687.96/x
3. Step 3: Cross multiply
   13,047.86x = 19,572.85 × 3,687.96
4. Step 4: Simplify right side
   13,047.86x = 72,183,887.89
5. Step 5: Solve for x
   x = 72,183,887.89/13,047.86
6. Step 6: Final answer
   x = 5,532.24