Finding the Fourth Proportional to 10,877.51, 16,315.40 and 3,479.97

Step by Step Solution

1. Step 1: Write the proportion equation
   10,877.51 : 16,315.40 = 3,479.97 : x
2. Step 2: Convert to fraction form
   10,877.51/16,315.40 = 3,479.97/x
3. Step 3: Cross multiply
   10,877.51x = 16,315.40 × 3,479.97
4. Step 4: Simplify right side
   10,877.51x = 56,777,085.14
5. Step 5: Solve for x
   x = 56,777,085.14/10,877.51
6. Step 6: Final answer
   x = 5,219.68