Finding the Fourth Proportional to 21,538.82, 32,316.33 and 7,499.90

Step by Step Solution

1. Step 1: Write the proportion equation
   21,538.82 : 32,316.33 = 7,499.90 : x
2. Step 2: Convert to fraction form
   21,538.82/32,316.33 = 7,499.90/x
3. Step 3: Cross multiply
   21,538.82x = 32,316.33 × 7,499.90
4. Step 4: Simplify right side
   21,538.82x = 242,369,243.37
5. Step 5: Solve for x
   x = 242,369,243.37/21,538.82
6. Step 6: Final answer
   x = 11,252.67