Finding the Fourth Proportional to 10,688.10, 16,032.15 and 10,688.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,688.10 : 16,032.15 = 10,688.10 : x
2. Step 2: Convert to fraction form
   10,688.10/16,032.15 = 10,688.10/x
3. Step 3: Cross multiply
   10,688.10x = 16,032.15 × 10,688.10
4. Step 4: Simplify right side
   10,688.10x = 171,353,222.42
5. Step 5: Solve for x
   x = 171,353,222.42/10,688.10
6. Step 6: Final answer
   x = 16,032.15