Finding the Fourth Proportional to 11,181.51, 16,773.89 and 3,390.99

Step by Step Solution

1. Step 1: Write the proportion equation
   11,181.51 : 16,773.89 = 3,390.99 : x
2. Step 2: Convert to fraction form
   11,181.51/16,773.89 = 3,390.99/x
3. Step 3: Cross multiply
   11,181.51x = 16,773.89 × 3,390.99
4. Step 4: Simplify right side
   11,181.51x = 56,880,076.30
5. Step 5: Solve for x
   x = 56,880,076.30/11,181.51
6. Step 6: Final answer
   x = 5,086.98