Finding the Fourth Proportional to 13,012.57, 19,513.32 and 8,854.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,012.57 : 19,513.32 = 8,854.84 : x
2. Step 2: Convert to fraction form
   13,012.57/19,513.32 = 8,854.84/x
3. Step 3: Cross multiply
   13,012.57x = 19,513.32 × 8,854.84
4. Step 4: Simplify right side
   13,012.57x = 172,787,326.47
5. Step 5: Solve for x
   x = 172,787,326.47/13,012.57
6. Step 6: Final answer
   x = 13,278.49