Finding the Fourth Proportional to 10,158.63, 15,238.62 and 3,918.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,158.63 : 15,238.62 = 3,918.71 : x
2. Step 2: Convert to fraction form
   10,158.63/15,238.62 = 3,918.71/x
3. Step 3: Cross multiply
   10,158.63x = 15,238.62 × 3,918.71
4. Step 4: Simplify right side
   10,158.63x = 59,715,656.39
5. Step 5: Solve for x
   x = 59,715,656.39/10,158.63
6. Step 6: Final answer
   x = 5,878.32