Finding the Fourth Proportional to 12,612.63, 17,405.82 and 6,947.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,612.63 : 17,405.82 = 6,947.56 : x
2. Step 2: Convert to fraction form
   12,612.63/17,405.82 = 6,947.56/x
3. Step 3: Cross multiply
   12,612.63x = 17,405.82 × 6,947.56
4. Step 4: Simplify right side
   12,612.63x = 120,927,935.28
5. Step 5: Solve for x
   x = 120,927,935.28/12,612.63
6. Step 6: Final answer
   x = 9,587.84