Finding the Fourth Proportional to 21,422,533.10, 29,552,164.35 and 13,679,434.22

Step by Step Solution

1. Step 1: Write the proportion equation
   21,422,533.10 : 29,552,164.35 = 13,679,434.22 : x
2. Step 2: Convert to fraction form
   21,422,533.10/29,552,164.35 = 13,679,434.22/x
3. Step 3: Cross multiply
   21,422,533.10x = 29,552,164.35 × 13,679,434.22
4. Step 4: Simplify right side
   21,422,533.10x = 404,256,888,284,454.12
5. Step 5: Solve for x
   x = 404,256,888,284,454.12/21,422,533.10
6. Step 6: Final answer
   x = 18,870,638.99