Finding the Fourth Proportional to 21,978,131.63, 30,329,821.64 and 12,190,074.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,978,131.63 : 30,329,821.64 = 12,190,074.62 : x
2. Step 2: Convert to fraction form
   21,978,131.63/30,329,821.64 = 12,190,074.62/x
3. Step 3: Cross multiply
   21,978,131.63x = 30,329,821.64 × 12,190,074.62
4. Step 4: Simplify right side
   21,978,131.63x = 369,722,788,881,716.81
5. Step 5: Solve for x
   x = 369,722,788,881,716.81/21,978,131.63
6. Step 6: Final answer
   x = 16,822,302.97