Finding the Fourth Proportional to 21,095.34, 31,624.38 and 7,948.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,095.34 : 31,624.38 = 7,948.32 : x
2. Step 2: Convert to fraction form
   21,095.34/31,624.38 = 7,948.32/x
3. Step 3: Cross multiply
   21,095.34x = 31,624.38 × 7,948.32
4. Step 4: Simplify right side
   21,095.34x = 251,360,692.04
5. Step 5: Solve for x
   x = 251,360,692.04/21,095.34
6. Step 6: Final answer
   x = 11,915.46