Finding the Fourth Proportional to 7,218,061.97, 10,787,464.78 and 5,276,877.09

Step by Step Solution

1. Step 1: Write the proportion equation
   7,218,061.97 : 10,787,464.78 = 5,276,877.09 : x
2. Step 2: Convert to fraction form
   7,218,061.97/10,787,464.78 = 5,276,877.09/x
3. Step 3: Cross multiply
   7,218,061.97x = 10,787,464.78 × 5,276,877.09
4. Step 4: Simplify right side
   7,218,061.97x = 56,924,125,702,826.56
5. Step 5: Solve for x
   x = 56,924,125,702,826.56/7,218,061.97
6. Step 6: Final answer
   x = 7,886,344.83