Finding the Fourth Proportional to 21,947.97, 32,921.61 and 5,307.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,947.97 : 32,921.61 = 5,307.89 : x
2. Step 2: Convert to fraction form
   21,947.97/32,921.61 = 5,307.89/x
3. Step 3: Cross multiply
   21,947.97x = 32,921.61 × 5,307.89
4. Step 4: Simplify right side
   21,947.97x = 174,744,284.50
5. Step 5: Solve for x
   x = 174,744,284.50/21,947.97
6. Step 6: Final answer
   x = 7,961.75