Finding the Fourth Proportional to 21,779,899.59, 30,058,018.26 and 12,488,334.09

Step by Step Solution

1. Step 1: Write the proportion equation
   21,779,899.59 : 30,058,018.26 = 12,488,334.09 : x
2. Step 2: Convert to fraction form
   21,779,899.59/30,058,018.26 = 12,488,334.09/x
3. Step 3: Cross multiply
   21,779,899.59x = 30,058,018.26 × 12,488,334.09
4. Step 4: Simplify right side
   21,779,899.59x = 375,374,574,114,200.50
5. Step 5: Solve for x
   x = 375,374,574,114,200.50/21,779,899.59
6. Step 6: Final answer
   x = 17,234,908.39