Finding the Fourth Proportional to 15,487.42, 21,365.76 and 9,196.14

Step by Step Solution

1. Step 1: Write the proportion equation
   15,487.42 : 21,365.76 = 9,196.14 : x
2. Step 2: Convert to fraction form
   15,487.42/21,365.76 = 9,196.14/x
3. Step 3: Cross multiply
   15,487.42x = 21,365.76 × 9,196.14
4. Step 4: Simplify right side
   15,487.42x = 196,482,520.17
5. Step 5: Solve for x
   x = 196,482,520.17/15,487.42
6. Step 6: Final answer
   x = 12,686.59