Finding the Fourth Proportional to 15,484.10, 21,369.86 and 9,196.47

Step by Step Solution

1. Step 1: Write the proportion equation
   15,484.10 : 21,369.86 = 9,196.47 : x
2. Step 2: Convert to fraction form
   15,484.10/21,369.86 = 9,196.47/x
3. Step 3: Cross multiply
   15,484.10x = 21,369.86 × 9,196.47
4. Step 4: Simplify right side
   15,484.10x = 196,527,264.90
5. Step 5: Solve for x
   x = 196,527,264.90/15,484.10
6. Step 6: Final answer
   x = 12,692.20