Finding the Fourth Proportional to 11,945.47, 17,918.89 and 3,625.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,945.47 : 17,918.89 = 3,625.76 : x
2. Step 2: Convert to fraction form
   11,945.47/17,918.89 = 3,625.76/x
3. Step 3: Cross multiply
   11,945.47x = 17,918.89 × 3,625.76
4. Step 4: Simplify right side
   11,945.47x = 64,969,513.81
5. Step 5: Solve for x
   x = 64,969,513.81/11,945.47
6. Step 6: Final answer
   x = 5,438.84