Finding the Fourth Proportional to 10,990.66, 16,483.83 and 2,985.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,990.66 : 16,483.83 = 2,985.34 : x
2. Step 2: Convert to fraction form
   10,990.66/16,483.83 = 2,985.34/x
3. Step 3: Cross multiply
   10,990.66x = 16,483.83 × 2,985.34
4. Step 4: Simplify right side
   10,990.66x = 49,209,837.05
5. Step 5: Solve for x
   x = 49,209,837.05/10,990.66
6. Step 6: Final answer
   x = 4,477.42