Finding the Fourth Proportional to 12,070.56, 16,665.47 and 7,540.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,070.56 : 16,665.47 = 7,540.12 : x
2. Step 2: Convert to fraction form
   12,070.56/16,665.47 = 7,540.12/x
3. Step 3: Cross multiply
   12,070.56x = 16,665.47 × 7,540.12
4. Step 4: Simplify right side
   12,070.56x = 125,659,643.66
5. Step 5: Solve for x
   x = 125,659,643.66/12,070.56
6. Step 6: Final answer
   x = 10,410.42