Finding the Fourth Proportional to 12,918.06, 19,372.62 and 5,018.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,918.06 : 19,372.62 = 5,018.71 : x
2. Step 2: Convert to fraction form
   12,918.06/19,372.62 = 5,018.71/x
3. Step 3: Cross multiply
   12,918.06x = 19,372.62 × 5,018.71
4. Step 4: Simplify right side
   12,918.06x = 97,225,561.72
5. Step 5: Solve for x
   x = 97,225,561.72/12,918.06
6. Step 6: Final answer
   x = 7,526.33