Finding the Fourth Proportional to 10,916.37, 16,374.96 and 3,521.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,916.37 : 16,374.96 = 3,521.61 : x
2. Step 2: Convert to fraction form
   10,916.37/16,374.96 = 3,521.61/x
3. Step 3: Cross multiply
   10,916.37x = 16,374.96 × 3,521.61
4. Step 4: Simplify right side
   10,916.37x = 57,666,222.89
5. Step 5: Solve for x
   x = 57,666,222.89/10,916.37
6. Step 6: Final answer
   x = 5,282.55