Finding the Fourth Proportional to 11,870.94, 17,807.43 and 3,105.84

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.94 : 17,807.43 = 3,105.84 : x
2. Step 2: Convert to fraction form
   11,870.94/17,807.43 = 3,105.84/x
3. Step 3: Cross multiply
   11,870.94x = 17,807.43 × 3,105.84
4. Step 4: Simplify right side
   11,870.94x = 55,307,089.35
5. Step 5: Solve for x
   x = 55,307,089.35/11,870.94
6. Step 6: Final answer
   x = 4,659.03