Finding the Fourth Proportional to 15,399.23, 23,102.30 and 5,538.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,399.23 : 23,102.30 = 5,538.50 : x
2. Step 2: Convert to fraction form
   15,399.23/23,102.30 = 5,538.50/x
3. Step 3: Cross multiply
   15,399.23x = 23,102.30 × 5,538.50
4. Step 4: Simplify right side
   15,399.23x = 127,952,060.86
5. Step 5: Solve for x
   x = 127,952,060.86/15,399.23
6. Step 6: Final answer
   x = 8,308.99