Finding the Fourth Proportional to 21,355,864.16, 29,473,681.89 and 12,063,826.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,355,864.16 : 29,473,681.89 = 12,063,826.04 : x
2. Step 2: Convert to fraction form
   21,355,864.16/29,473,681.89 = 12,063,826.04/x
3. Step 3: Cross multiply
   21,355,864.16x = 29,473,681.89 × 12,063,826.04
4. Step 4: Simplify right side
   21,355,864.16x = 355,565,371,079,258.38
5. Step 5: Solve for x
   x = 355,565,371,079,258.38/21,355,864.16
6. Step 6: Final answer
   x = 16,649,542.65