Finding the Fourth Proportional to 11,945.99, 16,485.84 and 7,164.29

Step by Step Solution

1. Step 1: Write the proportion equation
   11,945.99 : 16,485.84 = 7,164.29 : x
2. Step 2: Convert to fraction form
   11,945.99/16,485.84 = 7,164.29/x
3. Step 3: Cross multiply
   11,945.99x = 16,485.84 × 7,164.29
4. Step 4: Simplify right side
   11,945.99x = 118,109,256.22
5. Step 5: Solve for x
   x = 118,109,256.22/11,945.99
6. Step 6: Final answer
   x = 9,886.94