Finding the Fourth Proportional to 21,188.56, 31,782.52 and 7,337.68

Step by Step Solution

1. Step 1: Write the proportion equation
   21,188.56 : 31,782.52 = 7,337.68 : x
2. Step 2: Convert to fraction form
   21,188.56/31,782.52 = 7,337.68/x
3. Step 3: Cross multiply
   21,188.56x = 31,782.52 × 7,337.68
4. Step 4: Simplify right side
   21,188.56x = 233,209,961.35
5. Step 5: Solve for x
   x = 233,209,961.35/21,188.56
6. Step 6: Final answer
   x = 11,006.41