Finding the Fourth Proportional to 10,991.94, 16,490.51 and 3,596.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,991.94 : 16,490.51 = 3,596.99 : x
2. Step 2: Convert to fraction form
   10,991.94/16,490.51 = 3,596.99/x
3. Step 3: Cross multiply
   10,991.94x = 16,490.51 × 3,596.99
4. Step 4: Simplify right side
   10,991.94x = 59,316,199.56
5. Step 5: Solve for x
   x = 59,316,199.56/10,991.94
6. Step 6: Final answer
   x = 5,396.34