Finding the Fourth Proportional to 12,329.69, 18,499.19 and 7,402.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,329.69 : 18,499.19 = 7,402.76 : x
2. Step 2: Convert to fraction form
   12,329.69/18,499.19 = 7,402.76/x
3. Step 3: Cross multiply
   12,329.69x = 18,499.19 × 7,402.76
4. Step 4: Simplify right side
   12,329.69x = 136,945,100.76
5. Step 5: Solve for x
   x = 136,945,100.76/12,329.69
6. Step 6: Final answer
   x = 11,106.94