Finding the Fourth Proportional to 13,012.19, 19,518.24 and 3,151.46

Step by Step Solution

1. Step 1: Write the proportion equation
   13,012.19 : 19,518.24 = 3,151.46 : x
2. Step 2: Convert to fraction form
   13,012.19/19,518.24 = 3,151.46/x
3. Step 3: Cross multiply
   13,012.19x = 19,518.24 × 3,151.46
4. Step 4: Simplify right side
   13,012.19x = 61,510,894.59
5. Step 5: Solve for x
   x = 61,510,894.59/13,012.19
6. Step 6: Final answer
   x = 4,727.17