Finding the Fourth Proportional to 13,870.59, 19,136.03 and 8,833.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,870.59 : 19,136.03 = 8,833.91 : x
2. Step 2: Convert to fraction form
   13,870.59/19,136.03 = 8,833.91/x
3. Step 3: Cross multiply
   13,870.59x = 19,136.03 × 8,833.91
4. Step 4: Simplify right side
   13,870.59x = 169,045,826.93
5. Step 5: Solve for x
   x = 169,045,826.93/13,870.59
6. Step 6: Final answer
   x = 12,187.36