Finding the Fourth Proportional to 12,131.99, 18,187.16 and 4,734.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,131.99 : 18,187.16 = 4,734.73 : x
2. Step 2: Convert to fraction form
   12,131.99/18,187.16 = 4,734.73/x
3. Step 3: Cross multiply
   12,131.99x = 18,187.16 × 4,734.73
4. Step 4: Simplify right side
   12,131.99x = 86,111,292.07
5. Step 5: Solve for x
   x = 86,111,292.07/12,131.99
6. Step 6: Final answer
   x = 7,097.87