Finding the Fourth Proportional to 12,165.42, 18,240.78 and 4,761.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,165.42 : 18,240.78 = 4,761.06 : x
2. Step 2: Convert to fraction form
   12,165.42/18,240.78 = 4,761.06/x
3. Step 3: Cross multiply
   12,165.42x = 18,240.78 × 4,761.06
4. Step 4: Simplify right side
   12,165.42x = 86,845,448.03
5. Step 5: Solve for x
   x = 86,845,448.03/12,165.42
6. Step 6: Final answer
   x = 7,138.71