Finding the Fourth Proportional to 9,355.86, 12,910.89 and 5,107.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,355.86 : 12,910.89 = 5,107.01 : x
2. Step 2: Convert to fraction form
   9,355.86/12,910.89 = 5,107.01/x
3. Step 3: Cross multiply
   9,355.86x = 12,910.89 × 5,107.01
4. Step 4: Simplify right side
   9,355.86x = 65,935,998.94
5. Step 5: Solve for x
   x = 65,935,998.94/9,355.86
6. Step 6: Final answer
   x = 7,047.56