Finding the Fourth Proportional to 12,950,164.61, 17,870,758.82 and 7,148,821.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,950,164.61 : 17,870,758.82 = 7,148,821.79 : x
2. Step 2: Convert to fraction form
   12,950,164.61/17,870,758.82 = 7,148,821.79/x
3. Step 3: Cross multiply
   12,950,164.61x = 17,870,758.82 × 7,148,821.79
4. Step 4: Simplify right side
   12,950,164.61x = 127,754,870,091,991.58
5. Step 5: Solve for x
   x = 127,754,870,091,991.58/12,950,164.61
6. Step 6: Final answer
   x = 9,865,115.54