Finding the Fourth Proportional to 8,916.63, 13,316.39 and 7,164.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,916.63 : 13,316.39 = 7,164.29 : x
2. Step 2: Convert to fraction form
   8,916.63/13,316.39 = 7,164.29/x
3. Step 3: Cross multiply
   8,916.63x = 13,316.39 × 7,164.29
4. Step 4: Simplify right side
   8,916.63x = 95,402,443.89
5. Step 5: Solve for x
   x = 95,402,443.89/8,916.63
6. Step 6: Final answer
   x = 10,699.39