Finding the Fourth Proportional to 21,947.00, 32,921.55 and 7,155.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,947.00 : 32,921.55 = 7,155.89 : x
2. Step 2: Convert to fraction form
   21,947.00/32,921.55 = 7,155.89/x
3. Step 3: Cross multiply
   21,947.00x = 32,921.55 × 7,155.89
4. Step 4: Simplify right side
   21,947.00x = 235,582,825.82
5. Step 5: Solve for x
   x = 235,582,825.82/21,947.00
6. Step 6: Final answer
   x = 10,734.17