Finding the Fourth Proportional to 10,312.18, 15,453.87 and 5,112.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,312.18 : 15,453.87 = 5,112.82 : x
2. Step 2: Convert to fraction form
   10,312.18/15,453.87 = 5,112.82/x
3. Step 3: Cross multiply
   10,312.18x = 15,453.87 × 5,112.82
4. Step 4: Simplify right side
   10,312.18x = 79,012,855.61
5. Step 5: Solve for x
   x = 79,012,855.61/10,312.18
6. Step 6: Final answer
   x = 7,662.09