Finding the Fourth Proportional to 13,006.58, 19,509.89 and 3,145.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,006.58 : 19,509.89 = 3,145.82 : x
2. Step 2: Convert to fraction form
   13,006.58/19,509.89 = 3,145.82/x
3. Step 3: Cross multiply
   13,006.58x = 19,509.89 × 3,145.82
4. Step 4: Simplify right side
   13,006.58x = 61,374,488.88
5. Step 5: Solve for x
   x = 61,374,488.88/13,006.58
6. Step 6: Final answer
   x = 4,718.73