Finding the Fourth Proportional to 13,152, 19,731.42 and 3,918

Step by Step Solution

1. Step 1: Write the proportion equation
   13,152 : 19,731.42 = 3,918 : x
2. Step 2: Convert to fraction form
   13,152/19,731.42 = 3,918/x
3. Step 3: Cross multiply
   13,152x = 19,731.42 × 3,918
4. Step 4: Simplify right side
   13,152x = 77,307,703.56
5. Step 5: Solve for x
   x = 77,307,703.56/13,152
6. Step 6: Final answer
   x = 5,878.02