Finding the Fourth Proportional to 9,900.45, 13,661.73 and 5,652.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,900.45 : 13,661.73 = 5,652.54 : x
2. Step 2: Convert to fraction form
   9,900.45/13,661.73 = 5,652.54/x
3. Step 3: Cross multiply
   9,900.45x = 13,661.73 × 5,652.54
4. Step 4: Simplify right side
   9,900.45x = 77,223,475.29
5. Step 5: Solve for x
   x = 77,223,475.29/9,900.45
6. Step 6: Final answer
   x = 7,800.00