Finding the Fourth Proportional to 47,882.16, 71,821.89 and 12,821.82

Step by Step Solution

1. Step 1: Write the proportion equation
   47,882.16 : 71,821.89 = 12,821.82 : x
2. Step 2: Convert to fraction form
   47,882.16/71,821.89 = 12,821.82/x
3. Step 3: Cross multiply
   47,882.16x = 71,821.89 × 12,821.82
4. Step 4: Simplify right side
   47,882.16x = 920,887,345.64
5. Step 5: Solve for x
   x = 920,887,345.64/47,882.16
6. Step 6: Final answer
   x = 19,232.37