Finding the Fourth Proportional to 12,240, 18,362.88 and 5,314.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,240 : 18,362.88 = 5,314.56 : x
2. Step 2: Convert to fraction form
   12,240/18,362.88 = 5,314.56/x
3. Step 3: Cross multiply
   12,240x = 18,362.88 × 5,314.56
4. Step 4: Simplify right side
   12,240x = 97,590,627.53
5. Step 5: Solve for x
   x = 97,590,627.53/12,240
6. Step 6: Final answer
   x = 7,973.09