Finding the Fourth Proportional to 5,018.91, 7,528.41 and 1,321.14

Step by Step Solution

1. Step 1: Write the proportion equation
   5,018.91 : 7,528.41 = 1,321.14 : x
2. Step 2: Convert to fraction form
   5,018.91/7,528.41 = 1,321.14/x
3. Step 3: Cross multiply
   5,018.91x = 7,528.41 × 1,321.14
4. Step 4: Simplify right side
   5,018.91x = 9,946,083.59
5. Step 5: Solve for x
   x = 9,946,083.59/5,018.91
6. Step 6: Final answer
   x = 1,981.72