Finding the Fourth Proportional to 11,426.30, 17,131.16 and 7,719.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,426.30 : 17,131.16 = 7,719.34 : x
2. Step 2: Convert to fraction form
   11,426.30/17,131.16 = 7,719.34/x
3. Step 3: Cross multiply
   11,426.30x = 17,131.16 × 7,719.34
4. Step 4: Simplify right side
   11,426.30x = 132,241,248.63
5. Step 5: Solve for x
   x = 132,241,248.63/11,426.30
6. Step 6: Final answer
   x = 11,573.41