Finding the Fourth Proportional to 21,164,153.88, 29,212,748.10 and 13,823,109.30

Step by Step Solution

1. Step 1: Write the proportion equation
   21,164,153.88 : 29,212,748.10 = 13,823,109.30 : x
2. Step 2: Convert to fraction form
   21,164,153.88/29,212,748.10 = 13,823,109.30/x
3. Step 3: Cross multiply
   21,164,153.88x = 29,212,748.10 × 13,823,109.30
4. Step 4: Simplify right side
   21,164,153.88x = 403,811,009,939,667.38
5. Step 5: Solve for x
   x = 403,811,009,939,667.38/21,164,153.88
6. Step 6: Final answer
   x = 19,079,950.57