Finding the Fourth Proportional to 9,417,920.72, 12,996,979.56 and 5,288,281.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,417,920.72 : 12,996,979.56 = 5,288,281.52 : x
2. Step 2: Convert to fraction form
   9,417,920.72/12,996,979.56 = 5,288,281.52/x
3. Step 3: Cross multiply
   9,417,920.72x = 12,996,979.56 × 5,288,281.52
4. Step 4: Simplify right side
   9,417,920.72x = 68,731,686,822,965.73
5. Step 5: Solve for x
   x = 68,731,686,822,965.73/9,417,920.72
6. Step 6: Final answer
   x = 7,297,968.30