Finding the Fourth Proportional to 28,595,513.91, 42,869,162.82 and 12,409,271.76

Step by Step Solution

1. Step 1: Write the proportion equation
   28,595,513.91 : 42,869,162.82 = 12,409,271.76 : x
2. Step 2: Convert to fraction form
   28,595,513.91/42,869,162.82 = 12,409,271.76/x
3. Step 3: Cross multiply
   28,595,513.91x = 42,869,162.82 × 12,409,271.76
4. Step 4: Simplify right side
   28,595,513.91x = 531,975,091,557,067.94
5. Step 5: Solve for x
   x = 531,975,091,557,067.94/28,595,513.91
6. Step 6: Final answer
   x = 18,603,445.74