Finding the Fourth Proportional to 21,059,066.63, 29,061,704.34 and 12,357,384.26

Step by Step Solution

1. Step 1: Write the proportion equation
   21,059,066.63 : 29,061,704.34 = 12,357,384.26 : x
2. Step 2: Convert to fraction form
   21,059,066.63/29,061,704.34 = 12,357,384.26/x
3. Step 3: Cross multiply
   21,059,066.63x = 29,061,704.34 × 12,357,384.26
4. Step 4: Simplify right side
   21,059,066.63x = 359,126,647,634,581.19
5. Step 5: Solve for x
   x = 359,126,647,634,581.19/21,059,066.63
6. Step 6: Final answer
   x = 17,053,303.16