Finding the Fourth Proportional to 23,120,780.30, 31,906,665.69 and 13,828,350.20

Step by Step Solution

1. Step 1: Write the proportion equation
   23,120,780.30 : 31,906,665.69 = 13,828,350.20 : x
2. Step 2: Convert to fraction form
   23,120,780.30/31,906,665.69 = 13,828,350.20/x
3. Step 3: Cross multiply
   23,120,780.30x = 31,906,665.69 × 13,828,350.20
4. Step 4: Simplify right side
   23,120,780.30x = 441,216,546,716,111.31
5. Step 5: Solve for x
   x = 441,216,546,716,111.31/23,120,780.30
6. Step 6: Final answer
   x = 19,083,116.62