Finding the Fourth Proportional to 13,012.58, 19,518.90 and 3,151.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,012.58 : 19,518.90 = 3,151.82 : x
2. Step 2: Convert to fraction form
   13,012.58/19,518.90 = 3,151.82/x
3. Step 3: Cross multiply
   13,012.58x = 19,518.90 × 3,151.82
4. Step 4: Simplify right side
   13,012.58x = 61,520,059.40
5. Step 5: Solve for x
   x = 61,520,059.40/13,012.58
6. Step 6: Final answer
   x = 4,727.74