Finding the Fourth Proportional to 21,603,343.59, 29,813,131.89 and 12,310,713.77

Step by Step Solution

1. Step 1: Write the proportion equation
   21,603,343.59 : 29,813,131.89 = 12,310,713.77 : x
2. Step 2: Convert to fraction form
   21,603,343.59/29,813,131.89 = 12,310,713.77/x
3. Step 3: Cross multiply
   21,603,343.59x = 29,813,131.89 × 12,310,713.77
4. Step 4: Simplify right side
   21,603,343.59x = 367,020,933,135,983.50
5. Step 5: Solve for x
   x = 367,020,933,135,983.50/21,603,343.59
6. Step 6: Final answer
   x = 16,989,080.03