Finding the Fourth Proportional to 10,085.94, 15,142.95 and 5,158.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,085.94 : 15,142.95 = 5,158.98 : x
2. Step 2: Convert to fraction form
   10,085.94/15,142.95 = 5,158.98/x
3. Step 3: Cross multiply
   10,085.94x = 15,142.95 × 5,158.98
4. Step 4: Simplify right side
   10,085.94x = 78,122,176.19
5. Step 5: Solve for x
   x = 78,122,176.19/10,085.94
6. Step 6: Final answer
   x = 7,745.65