Finding the Fourth Proportional to 12,929.59, 19,410.81 and 10,994.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,929.59 : 19,410.81 = 10,994.10 : x
2. Step 2: Convert to fraction form
   12,929.59/19,410.81 = 10,994.10/x
3. Step 3: Cross multiply
   12,929.59x = 19,410.81 × 10,994.10
4. Step 4: Simplify right side
   12,929.59x = 213,404,272.20
5. Step 5: Solve for x
   x = 213,404,272.20/12,929.59
6. Step 6: Final answer
   x = 16,505.11