Finding the Fourth Proportional to 21,215.25, 31,837.59 and 7,364.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,215.25 : 31,837.59 = 7,364.25 : x
2. Step 2: Convert to fraction form
   21,215.25/31,837.59 = 7,364.25/x
3. Step 3: Cross multiply
   21,215.25x = 31,837.59 × 7,364.25
4. Step 4: Simplify right side
   21,215.25x = 234,459,972.16
5. Step 5: Solve for x
   x = 234,459,972.16/21,215.25
6. Step 6: Final answer
   x = 11,051.48