Finding the Fourth Proportional to 13,131.72, 19,697.12 and 5,734.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,131.72 : 19,697.12 = 5,734.50 : x
2. Step 2: Convert to fraction form
   13,131.72/19,697.12 = 5,734.50/x
3. Step 3: Cross multiply
   13,131.72x = 19,697.12 × 5,734.50
4. Step 4: Simplify right side
   13,131.72x = 112,953,085.86
5. Step 5: Solve for x
   x = 112,953,085.86/13,131.72
6. Step 6: Final answer
   x = 8,601.55