Finding the Fourth Proportional to 12,456,140.51, 17,189,984.00 and 7,870,788.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,456,140.51 : 17,189,984.00 = 7,870,788.83 : x
2. Step 2: Convert to fraction form
   12,456,140.51/17,189,984.00 = 7,870,788.83/x
3. Step 3: Cross multiply
   12,456,140.51x = 17,189,984.00 × 7,870,788.83
4. Step 4: Simplify right side
   12,456,140.51x = 135,298,733,988,805.78
5. Step 5: Solve for x
   x = 135,298,733,988,805.78/12,456,140.51
6. Step 6: Final answer
   x = 10,862,010.90