Finding the Fourth Proportional to 12,451.12, 17,178.86 and 7,412.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,451.12 : 17,178.86 = 7,412.82 : x
2. Step 2: Convert to fraction form
   12,451.12/17,178.86 = 7,412.82/x
3. Step 3: Cross multiply
   12,451.12x = 17,178.86 × 7,412.82
4. Step 4: Simplify right side
   12,451.12x = 127,343,796.99
5. Step 5: Solve for x
   x = 127,343,796.99/12,451.12
6. Step 6: Final answer
   x = 10,227.50