Finding the Fourth Proportional to 6,142,312.71, 8,476,647.89 and 3,389,178.71

Step by Step Solution

1. Step 1: Write the proportion equation
   6,142,312.71 : 8,476,647.89 = 3,389,178.71 : x
2. Step 2: Convert to fraction form
   6,142,312.71/8,476,647.89 = 3,389,178.71/x
3. Step 3: Cross multiply
   6,142,312.71x = 8,476,647.89 × 3,389,178.71
4. Step 4: Simplify right side
   6,142,312.71x = 28,728,874,565,200.15
5. Step 5: Solve for x
   x = 28,728,874,565,200.15/6,142,312.71
6. Step 6: Final answer
   x = 4,677,208.07