Finding the Fourth Proportional to 21,499,184.39, 29,671,803.14 and 12,681,126.59

Step by Step Solution

1. Step 1: Write the proportion equation
   21,499,184.39 : 29,671,803.14 = 12,681,126.59 : x
2. Step 2: Convert to fraction form
   21,499,184.39/29,671,803.14 = 12,681,126.59/x
3. Step 3: Cross multiply
   21,499,184.39x = 29,671,803.14 × 12,681,126.59
4. Step 4: Simplify right side
   21,499,184.39x = 376,271,891,560,134.88
5. Step 5: Solve for x
   x = 376,271,891,560,134.88/21,499,184.39
6. Step 6: Final answer
   x = 17,501,682.15