Finding the Fourth Proportional to 21,747,926.95, 30,013,216.56 and 13,490,649.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,747,926.95 : 30,013,216.56 = 13,490,649.72 : x
2. Step 2: Convert to fraction form
   21,747,926.95/30,013,216.56 = 13,490,649.72/x
3. Step 3: Cross multiply
   21,747,926.95x = 30,013,216.56 × 13,490,649.72
4. Step 4: Simplify right side
   21,747,926.95x = 404,897,791,606,758.38
5. Step 5: Solve for x
   x = 404,897,791,606,758.38/21,747,926.95
6. Step 6: Final answer
   x = 18,617,764.93