Finding the Fourth Proportional to 15,538.08, 21,442.55 and 8,464.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,538.08 : 21,442.55 = 8,464.50 : x
2. Step 2: Convert to fraction form
   15,538.08/21,442.55 = 8,464.50/x
3. Step 3: Cross multiply
   15,538.08x = 21,442.55 × 8,464.50
4. Step 4: Simplify right side
   15,538.08x = 181,500,422.15
5. Step 5: Solve for x
   x = 181,500,422.15/15,538.08
6. Step 6: Final answer
   x = 11,681.01