Finding the Fourth Proportional to 13,922,799.42, 19,214,620.56 and 7,728,428.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,922,799.42 : 19,214,620.56 = 7,728,428.10 : x
2. Step 2: Convert to fraction form
   13,922,799.42/19,214,620.56 = 7,728,428.10/x
3. Step 3: Cross multiply
   13,922,799.42x = 19,214,620.56 × 7,728,428.10
4. Step 4: Simplify right side
   13,922,799.42x = 148,498,813,466,741.72
5. Step 5: Solve for x
   x = 148,498,813,466,741.72/13,922,799.42
6. Step 6: Final answer
   x = 10,665,873.22