Finding the Fourth Proportional to 11,110,870.72, 16,667,639.52 and 3,920,920

Step by Step Solution

1. Step 1: Write the proportion equation
   11,110,870.72 : 16,667,639.52 = 3,920,920 : x
2. Step 2: Convert to fraction form
   11,110,870.72/16,667,639.52 = 3,920,920/x
3. Step 3: Cross multiply
   11,110,870.72x = 16,667,639.52 × 3,920,920
4. Step 4: Simplify right side
   11,110,870.72x = 65,352,481,146,758.40
5. Step 5: Solve for x
   x = 65,352,481,146,758.40/11,110,870.72
6. Step 6: Final answer
   x = 5,881,850.56