Finding the Fourth Proportional to 21,948.83, 32,915.46 and 7,905.09

Step by Step Solution

1. Step 1: Write the proportion equation
   21,948.83 : 32,915.46 = 7,905.09 : x
2. Step 2: Convert to fraction form
   21,948.83/32,915.46 = 7,905.09/x
3. Step 3: Cross multiply
   21,948.83x = 32,915.46 × 7,905.09
4. Step 4: Simplify right side
   21,948.83x = 260,199,673.69
5. Step 5: Solve for x
   x = 260,199,673.69/21,948.83
6. Step 6: Final answer
   x = 11,854.83