Finding the Fourth Proportional to 21,876,567.09, 30,190,271.31 and 12,087,641.90

Step by Step Solution

1. Step 1: Write the proportion equation
   21,876,567.09 : 30,190,271.31 = 12,087,641.90 : x
2. Step 2: Convert to fraction form
   21,876,567.09/30,190,271.31 = 12,087,641.90/x
3. Step 3: Cross multiply
   21,876,567.09x = 30,190,271.31 × 12,087,641.90
4. Step 4: Simplify right side
   21,876,567.09x = 364,929,188,308,172.50
5. Step 5: Solve for x
   x = 364,929,188,308,172.50/21,876,567.09
6. Step 6: Final answer
   x = 16,681,282.16