Finding the Fourth Proportional to 16,815,090.72, 25,130,499.84 and 12,275,698.96

Step by Step Solution

1. Step 1: Write the proportion equation
   16,815,090.72 : 25,130,499.84 = 12,275,698.96 : x
2. Step 2: Convert to fraction form
   16,815,090.72/25,130,499.84 = 12,275,698.96/x
3. Step 3: Cross multiply
   16,815,090.72x = 25,130,499.84 × 12,275,698.96
4. Step 4: Simplify right side
   16,815,090.72x = 308,494,450,750,168.19
5. Step 5: Solve for x
   x = 308,494,450,750,168.19/16,815,090.72
6. Step 6: Final answer
   x = 18,346,285.24