Finding the Fourth Proportional to 10,994.18, 16,492.06 and 3,978.36

Step by Step Solution

1. Step 1: Write the proportion equation
   10,994.18 : 16,492.06 = 3,978.36 : x
2. Step 2: Convert to fraction form
   10,994.18/16,492.06 = 3,978.36/x
3. Step 3: Cross multiply
   10,994.18x = 16,492.06 × 3,978.36
4. Step 4: Simplify right side
   10,994.18x = 65,611,351.82
5. Step 5: Solve for x
   x = 65,611,351.82/10,994.18
6. Step 6: Final answer
   x = 5,967.83