Finding the Fourth Proportional to 21,613,152.16, 29,826,385.34 and 11,823,386.15

Step by Step Solution

1. Step 1: Write the proportion equation
   21,613,152.16 : 29,826,385.34 = 11,823,386.15 : x
2. Step 2: Convert to fraction form
   21,613,152.16/29,826,385.34 = 11,823,386.15/x
3. Step 3: Cross multiply
   21,613,152.16x = 29,826,385.34 × 11,823,386.15
4. Step 4: Simplify right side
   21,613,152.16x = 352,648,871,333,519.06
5. Step 5: Solve for x
   x = 352,648,871,333,519.06/21,613,152.16
6. Step 6: Final answer
   x = 16,316,401.64