Finding the Fourth Proportional to 7,905.15, 10,910.15 and 7,645.52

Step by Step Solution

1. Step 1: Write the proportion equation
   7,905.15 : 10,910.15 = 7,645.52 : x
2. Step 2: Convert to fraction form
   7,905.15/10,910.15 = 7,645.52/x
3. Step 3: Cross multiply
   7,905.15x = 10,910.15 × 7,645.52
4. Step 4: Simplify right side
   7,905.15x = 83,413,677.25
5. Step 5: Solve for x
   x = 83,413,677.25/7,905.15
6. Step 6: Final answer
   x = 10,551.81