Finding the Fourth Proportional to 22,428,259.56, 30,951,011.76 and 12,114,987.21

Step by Step Solution

1. Step 1: Write the proportion equation
   22,428,259.56 : 30,951,011.76 = 12,114,987.21 : x
2. Step 2: Convert to fraction form
   22,428,259.56/30,951,011.76 = 12,114,987.21/x
3. Step 3: Cross multiply
   22,428,259.56x = 30,951,011.76 × 12,114,987.21
4. Step 4: Simplify right side
   22,428,259.56x = 374,971,111,608,959.62
5. Step 5: Solve for x
   x = 374,971,111,608,959.62/22,428,259.56
6. Step 6: Final answer
   x = 16,718,689.68