Finding the Fourth Proportional to 21,287,483.57, 31,951,412.81 and 13,175,922.41

Step by Step Solution

1. Step 1: Write the proportion equation
   21,287,483.57 : 31,951,412.81 = 13,175,922.41 : x
2. Step 2: Convert to fraction form
   21,287,483.57/31,951,412.81 = 13,175,922.41/x
3. Step 3: Cross multiply
   21,287,483.57x = 31,951,412.81 × 13,175,922.41
4. Step 4: Simplify right side
   21,287,483.57x = 420,989,336,074,440.06
5. Step 5: Solve for x
   x = 420,989,336,074,440.06/21,287,483.57
6. Step 6: Final answer
   x = 19,776,378.67