Finding the Fourth Proportional to 11,900.52, 17,878.14 and 8,398.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,900.52 : 17,878.14 = 8,398.59 : x
2. Step 2: Convert to fraction form
   11,900.52/17,878.14 = 8,398.59/x
3. Step 3: Cross multiply
   11,900.52x = 17,878.14 × 8,398.59
4. Step 4: Simplify right side
   11,900.52x = 150,151,167.82
5. Step 5: Solve for x
   x = 150,151,167.82/11,900.52
6. Step 6: Final answer
   x = 12,617.19