Finding the Fourth Proportional to 21,191.49, 31,780.62 and 7,337.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,191.49 : 31,780.62 = 7,337.25 : x
2. Step 2: Convert to fraction form
   21,191.49/31,780.62 = 7,337.25/x
3. Step 3: Cross multiply
   21,191.49x = 31,780.62 × 7,337.25
4. Step 4: Simplify right side
   21,191.49x = 233,182,354.10
5. Step 5: Solve for x
   x = 233,182,354.10/21,191.49
6. Step 6: Final answer
   x = 11,003.58