Finding the Fourth Proportional to 19,300,485.63, 28,950,739.25 and 12,117,064.71

Step by Step Solution

1. Step 1: Write the proportion equation
   19,300,485.63 : 28,950,739.25 = 12,117,064.71 : x
2. Step 2: Convert to fraction form
   19,300,485.63/28,950,739.25 = 12,117,064.71/x
3. Step 3: Cross multiply
   19,300,485.63x = 28,950,739.25 × 12,117,064.71
4. Step 4: Simplify right side
   19,300,485.63x = 350,797,980,834,001.56
5. Step 5: Solve for x
   x = 350,797,980,834,001.56/19,300,485.63
6. Step 6: Final answer
   x = 18,175,603.85