Finding the Fourth Proportional to 9,356.00, 12,898.87 and 7,756.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,356.00 : 12,898.87 = 7,756.61 : x
2. Step 2: Convert to fraction form
   9,356.00/12,898.87 = 7,756.61/x
3. Step 3: Cross multiply
   9,356.00x = 12,898.87 × 7,756.61
4. Step 4: Simplify right side
   9,356.00x = 100,051,420.14
5. Step 5: Solve for x
   x = 100,051,420.14/9,356.00
6. Step 6: Final answer
   x = 10,693.83