Finding the Fourth Proportional to 9,362.40, 12,881.34 and 7,111.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,362.40 : 12,881.34 = 7,111.14 : x
2. Step 2: Convert to fraction form
   9,362.40/12,881.34 = 7,111.14/x
3. Step 3: Cross multiply
   9,362.40x = 12,881.34 × 7,111.14
4. Step 4: Simplify right side
   9,362.40x = 91,601,012.13
5. Step 5: Solve for x
   x = 91,601,012.13/9,362.40
6. Step 6: Final answer
   x = 9,783.92