Finding the Fourth Proportional to 12,688,087.42, 17,509,574.82 and 6,886,867.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,688,087.42 : 17,509,574.82 = 6,886,867.62 : x
2. Step 2: Convert to fraction form
   12,688,087.42/17,509,574.82 = 6,886,867.62/x
3. Step 3: Cross multiply
   12,688,087.42x = 17,509,574.82 × 6,886,867.62
4. Step 4: Simplify right side
   12,688,087.42x = 120,586,123,867,825.33
5. Step 5: Solve for x
   x = 120,586,123,867,825.33/12,688,087.42
6. Step 6: Final answer
   x = 9,503,885.01