Finding the Fourth Proportional to 11,640.87, 17,456.18 and 3,319

Step by Step Solution

1. Step 1: Write the proportion equation
   11,640.87 : 17,456.18 = 3,319 : x
2. Step 2: Convert to fraction form
   11,640.87/17,456.18 = 3,319/x
3. Step 3: Cross multiply
   11,640.87x = 17,456.18 × 3,319
4. Step 4: Simplify right side
   11,640.87x = 57,937,061.42
5. Step 5: Solve for x
   x = 57,937,061.42/11,640.87
6. Step 6: Final answer
   x = 4,977.04