Finding the Fourth Proportional to 12,642,870.83, 17,445,284.89 and 7,678,728.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,642,870.83 : 17,445,284.89 = 7,678,728.92 : x
2. Step 2: Convert to fraction form
   12,642,870.83/17,445,284.89 = 7,678,728.92/x
3. Step 3: Cross multiply
   12,642,870.83x = 17,445,284.89 × 7,678,728.92
4. Step 4: Simplify right side
   12,642,870.83x = 133,957,613,626,898.41
5. Step 5: Solve for x
   x = 133,957,613,626,898.41/12,642,870.83
6. Step 6: Final answer
   x = 10,595,506.00