Finding the Fourth Proportional to 12,384.74, 17,085.25 and 7,906.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,384.74 : 17,085.25 = 7,906.25 : x
2. Step 2: Convert to fraction form
   12,384.74/17,085.25 = 7,906.25/x
3. Step 3: Cross multiply
   12,384.74x = 17,085.25 × 7,906.25
4. Step 4: Simplify right side
   12,384.74x = 135,080,257.81
5. Step 5: Solve for x
   x = 135,080,257.81/12,384.74
6. Step 6: Final answer
   x = 10,906.99