Finding the Fourth Proportional to 8,258,178.72, 12,387,263.52 and 2,578,889.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,258,178.72 : 12,387,263.52 = 2,578,889.76 : x
2. Step 2: Convert to fraction form
   8,258,178.72/12,387,263.52 = 2,578,889.76/x
3. Step 3: Cross multiply
   8,258,178.72x = 12,387,263.52 × 2,578,889.76
4. Step 4: Simplify right side
   8,258,178.72x = 31,945,387,046,149.55
5. Step 5: Solve for x
   x = 31,945,387,046,149.55/8,258,178.72
6. Step 6: Final answer
   x = 3,868,333.22