Finding the Fourth Proportional to 11,858.88, 16,360.56 and 7,142.52

Step by Step Solution

1. Step 1: Write the proportion equation
   11,858.88 : 16,360.56 = 7,142.52 : x
2. Step 2: Convert to fraction form
   11,858.88/16,360.56 = 7,142.52/x
3. Step 3: Cross multiply
   11,858.88x = 16,360.56 × 7,142.52
4. Step 4: Simplify right side
   11,858.88x = 116,855,627.01
5. Step 5: Solve for x
   x = 116,855,627.01/11,858.88
6. Step 6: Final answer
   x = 9,853.85