Finding the Fourth Proportional to 10,355.80, 14,298.78 and 7,225.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,355.80 : 14,298.78 = 7,225.96 : x
2. Step 2: Convert to fraction form
   10,355.80/14,298.78 = 7,225.96/x
3. Step 3: Cross multiply
   10,355.80x = 14,298.78 × 7,225.96
4. Step 4: Simplify right side
   10,355.80x = 103,322,412.33
5. Step 5: Solve for x
   x = 103,322,412.33/10,355.80
6. Step 6: Final answer
   x = 9,977.25