Finding the Fourth Proportional to 12,950,186.31, 17,870,788.71 and 7,148,843.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,950,186.31 : 17,870,788.71 = 7,148,843.46 : x
2. Step 2: Convert to fraction form
   12,950,186.31/17,870,788.71 = 7,148,843.46/x
3. Step 3: Cross multiply
   12,950,186.31x = 17,870,788.71 × 7,148,843.46
4. Step 4: Simplify right side
   12,950,186.31x = 127,755,470,994,525.34
5. Step 5: Solve for x
   x = 127,755,470,994,525.34/12,950,186.31
6. Step 6: Final answer
   x = 9,865,145.41