Finding the Fourth Proportional to 11,131.51, 16,705.72 and 4,118.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,131.51 : 16,705.72 = 4,118.16 : x
2. Step 2: Convert to fraction form
   11,131.51/16,705.72 = 4,118.16/x
3. Step 3: Cross multiply
   11,131.51x = 16,705.72 × 4,118.16
4. Step 4: Simplify right side
   11,131.51x = 68,796,744.35
5. Step 5: Solve for x
   x = 68,796,744.35/11,131.51
6. Step 6: Final answer
   x = 6,180.36