Finding the Fourth Proportional to 10,810.71, 16,215.63 and 3,415.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,810.71 : 16,215.63 = 3,415.59 : x
2. Step 2: Convert to fraction form
   10,810.71/16,215.63 = 3,415.59/x
3. Step 3: Cross multiply
   10,810.71x = 16,215.63 × 3,415.59
4. Step 4: Simplify right side
   10,810.71x = 55,385,943.67
5. Step 5: Solve for x
   x = 55,385,943.67/10,810.71
6. Step 6: Final answer
   x = 5,123.25