Finding the Fourth Proportional to 15,522.10, 21,420.72 and 8,448.52

Step by Step Solution

1. Step 1: Write the proportion equation
   15,522.10 : 21,420.72 = 8,448.52 : x
2. Step 2: Convert to fraction form
   15,522.10/21,420.72 = 8,448.52/x
3. Step 3: Cross multiply
   15,522.10x = 21,420.72 × 8,448.52
4. Step 4: Simplify right side
   15,522.10x = 180,973,381.33
5. Step 5: Solve for x
   x = 180,973,381.33/15,522.10
6. Step 6: Final answer
   x = 11,659.08