Finding the Fourth Proportional to 21,612.18, 32,410.75 and 7,571.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,612.18 : 32,410.75 = 7,571.89 : x
2. Step 2: Convert to fraction form
   21,612.18/32,410.75 = 7,571.89/x
3. Step 3: Cross multiply
   21,612.18x = 32,410.75 × 7,571.89
4. Step 4: Simplify right side
   21,612.18x = 245,410,633.82
5. Step 5: Solve for x
   x = 245,410,633.82/21,612.18
6. Step 6: Final answer
   x = 11,355.20