Finding the Fourth Proportional to 12,845.93, 17,725.50 and 7,542.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,845.93 : 17,725.50 = 7,542.45 : x
2. Step 2: Convert to fraction form
   12,845.93/17,725.50 = 7,542.45/x
3. Step 3: Cross multiply
   12,845.93x = 17,725.50 × 7,542.45
4. Step 4: Simplify right side
   12,845.93x = 133,693,697.48
5. Step 5: Solve for x
   x = 133,693,697.48/12,845.93
6. Step 6: Final answer
   x = 10,407.48