Finding the Fourth Proportional to 10,555.45, 14,568.53 and 7,538.74

Step by Step Solution

1. Step 1: Write the proportion equation
   10,555.45 : 14,568.53 = 7,538.74 : x
2. Step 2: Convert to fraction form
   10,555.45/14,568.53 = 7,538.74/x
3. Step 3: Cross multiply
   10,555.45x = 14,568.53 × 7,538.74
4. Step 4: Simplify right side
   10,555.45x = 109,828,285.74
5. Step 5: Solve for x
   x = 109,828,285.74/10,555.45
6. Step 6: Final answer
   x = 10,404.89