Finding the Fourth Proportional to 21,817,798.72, 30,108,757.08 and 12,028,589.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,817,798.72 : 30,108,757.08 = 12,028,589.98 : x
2. Step 2: Convert to fraction form
   21,817,798.72/30,108,757.08 = 12,028,589.98/x
3. Step 3: Cross multiply
   21,817,798.72x = 30,108,757.08 × 12,028,589.98
4. Step 4: Simplify right side
   21,817,798.72x = 362,165,893,722,742.06
5. Step 5: Solve for x
   x = 362,165,893,722,742.06/21,817,798.72
6. Step 6: Final answer
   x = 16,599,561.60