Finding the Fourth Proportional to 19,499.68, 26,909.72 and 11,116.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,499.68 : 26,909.72 = 11,116.72 : x
2. Step 2: Convert to fraction form
   19,499.68/26,909.72 = 11,116.72/x
3. Step 3: Cross multiply
   19,499.68x = 26,909.72 × 11,116.72
4. Step 4: Simplify right side
   19,499.68x = 299,147,822.52
5. Step 5: Solve for x
   x = 299,147,822.52/19,499.68
6. Step 6: Final answer
   x = 15,341.17