Finding the Fourth Proportional to 21,876,697.12, 30,190,450.72 and 12,087,772

Step by Step Solution

1. Step 1: Write the proportion equation
   21,876,697.12 : 30,190,450.72 = 12,087,772 : x
2. Step 2: Convert to fraction form
   21,876,697.12/30,190,450.72 = 12,087,772/x
3. Step 3: Cross multiply
   21,876,697.12x = 30,190,450.72 × 12,087,772
4. Step 4: Simplify right side
   21,876,697.12x = 364,935,284,880,595.81
5. Step 5: Solve for x
   x = 364,935,284,880,595.81/21,876,697.12
6. Step 6: Final answer
   x = 16,681,461.69