Finding the Fourth Proportional to 12,711.56, 19,072.14 and 5,321

Step by Step Solution

1. Step 1: Write the proportion equation
   12,711.56 : 19,072.14 = 5,321 : x
2. Step 2: Convert to fraction form
   12,711.56/19,072.14 = 5,321/x
3. Step 3: Cross multiply
   12,711.56x = 19,072.14 × 5,321
4. Step 4: Simplify right side
   12,711.56x = 101,482,856.94
5. Step 5: Solve for x
   x = 101,482,856.94/12,711.56
6. Step 6: Final answer
   x = 7,983.51