Finding the Fourth Proportional to 10,788.72, 16,179.72 and 7,090.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,788.72 : 16,179.72 = 7,090.80 : x
2. Step 2: Convert to fraction form
   10,788.72/16,179.72 = 7,090.80/x
3. Step 3: Cross multiply
   10,788.72x = 16,179.72 × 7,090.80
4. Step 4: Simplify right side
   10,788.72x = 114,727,158.58
5. Step 5: Solve for x
   x = 114,727,158.58/10,788.72
6. Step 6: Final answer
   x = 10,633.99