Finding the Fourth Proportional to 11,355.69, 15,666.51 and 7,105.02

Step by Step Solution

1. Step 1: Write the proportion equation
   11,355.69 : 15,666.51 = 7,105.02 : x
2. Step 2: Convert to fraction form
   11,355.69/15,666.51 = 7,105.02/x
3. Step 3: Cross multiply
   11,355.69x = 15,666.51 × 7,105.02
4. Step 4: Simplify right side
   11,355.69x = 111,310,834.77
5. Step 5: Solve for x
   x = 111,310,834.77/11,355.69
6. Step 6: Final answer
   x = 9,802.20