Finding the Fourth Proportional to 13,012.88, 19,519.27 and 3,152.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,012.88 : 19,519.27 = 3,152.15 : x
2. Step 2: Convert to fraction form
   13,012.88/19,519.27 = 3,152.15/x
3. Step 3: Cross multiply
   13,012.88x = 19,519.27 × 3,152.15
4. Step 4: Simplify right side
   13,012.88x = 61,527,666.93
5. Step 5: Solve for x
   x = 61,527,666.93/13,012.88
6. Step 6: Final answer
   x = 4,728.21