Finding the Fourth Proportional to 10,956,389.76, 15,120,138.24 and 5,995,128.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,956,389.76 : 15,120,138.24 = 5,995,128.96 : x
2. Step 2: Convert to fraction form
   10,956,389.76/15,120,138.24 = 5,995,128.96/x
3. Step 3: Cross multiply
   10,956,389.76x = 15,120,138.24 × 5,995,128.96
4. Step 4: Simplify right side
   10,956,389.76x = 90,647,178,641,827.44
5. Step 5: Solve for x
   x = 90,647,178,641,827.44/10,956,389.76
6. Step 6: Final answer
   x = 8,273,453.27