Finding the Fourth Proportional to 9,624.12, 13,281.48 and 5,431.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,624.12 : 13,281.48 = 5,431.56 : x
2. Step 2: Convert to fraction form
   9,624.12/13,281.48 = 5,431.56/x
3. Step 3: Cross multiply
   9,624.12x = 13,281.48 × 5,431.56
4. Step 4: Simplify right side
   9,624.12x = 72,139,155.51
5. Step 5: Solve for x
   x = 72,139,155.51/9,624.12
6. Step 6: Final answer
   x = 7,495.66