Finding the Fourth Proportional to 21,983.58, 32,977.41 and 7,947.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,983.58 : 32,977.41 = 7,947.12 : x
2. Step 2: Convert to fraction form
   21,983.58/32,977.41 = 7,947.12/x
3. Step 3: Cross multiply
   21,983.58x = 32,977.41 × 7,947.12
4. Step 4: Simplify right side
   21,983.58x = 262,075,434.56
5. Step 5: Solve for x
   x = 262,075,434.56/21,983.58
6. Step 6: Final answer
   x = 11,921.42