Finding the Fourth Proportional to 11,949.94, 17,925.09 and 3,186.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,949.94 : 17,925.09 = 3,186.10 : x
2. Step 2: Convert to fraction form
   11,949.94/17,925.09 = 3,186.10/x
3. Step 3: Cross multiply
   11,949.94x = 17,925.09 × 3,186.10
4. Step 4: Simplify right side
   11,949.94x = 57,111,129.25
5. Step 5: Solve for x
   x = 57,111,129.25/11,949.94
6. Step 6: Final answer
   x = 4,779.20