Finding the Fourth Proportional to 13,889.27, 19,162.43 and 7,916.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,889.27 : 19,162.43 = 7,916.62 : x
2. Step 2: Convert to fraction form
   13,889.27/19,162.43 = 7,916.62/x
3. Step 3: Cross multiply
   13,889.27x = 19,162.43 × 7,916.62
4. Step 4: Simplify right side
   13,889.27x = 151,701,676.59
5. Step 5: Solve for x
   x = 151,701,676.59/13,889.27
6. Step 6: Final answer
   x = 10,922.22