Finding the Fourth Proportional to 15,279,713.72, 21,086,015.82 and 8,404,718.84

Step by Step Solution

1. Step 1: Write the proportion equation
   15,279,713.72 : 21,086,015.82 = 8,404,718.84 : x
2. Step 2: Convert to fraction form
   15,279,713.72/21,086,015.82 = 8,404,718.84/x
3. Step 3: Cross multiply
   15,279,713.72x = 21,086,015.82 × 8,404,718.84
4. Step 4: Simplify right side
   15,279,713.72x = 177,222,034,422,892.06
5. Step 5: Solve for x
   x = 177,222,034,422,892.06/15,279,713.72
6. Step 6: Final answer
   x = 11,598,517.99