Finding the Fourth Proportional to 9,986.47, 14,956.36 and 7,892.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,986.47 : 14,956.36 = 7,892.42 : x
2. Step 2: Convert to fraction form
   9,986.47/14,956.36 = 7,892.42/x
3. Step 3: Cross multiply
   9,986.47x = 14,956.36 × 7,892.42
4. Step 4: Simplify right side
   9,986.47x = 118,041,837.40
5. Step 5: Solve for x
   x = 118,041,837.40/9,986.47
6. Step 6: Final answer
   x = 11,820.18