Finding the Fourth Proportional to 12,153.51, 18,222.48 and 5,131.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,153.51 : 18,222.48 = 5,131.62 : x
2. Step 2: Convert to fraction form
   12,153.51/18,222.48 = 5,131.62/x
3. Step 3: Cross multiply
   12,153.51x = 18,222.48 × 5,131.62
4. Step 4: Simplify right side
   12,153.51x = 93,510,842.82
5. Step 5: Solve for x
   x = 93,510,842.82/12,153.51
6. Step 6: Final answer
   x = 7,694.14