Finding the Fourth Proportional to 21,561,641.71, 32,290,901.17 and 12,436,074.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,561,641.71 : 32,290,901.17 = 12,436,074.38 : x
2. Step 2: Convert to fraction form
   21,561,641.71/32,290,901.17 = 12,436,074.38/x
3. Step 3: Cross multiply
   21,561,641.71x = 32,290,901.17 × 12,436,074.38
4. Step 4: Simplify right side
   21,561,641.71x = 401,572,048,796,986.12
5. Step 5: Solve for x
   x = 401,572,048,796,986.12/21,561,641.71
6. Step 6: Final answer
   x = 18,624,372.59