Finding the Fourth Proportional to 19,813,637.34, 27,317,507.31 and 12,831,978.42

Step by Step Solution

1. Step 1: Write the proportion equation
   19,813,637.34 : 27,317,507.31 = 12,831,978.42 : x
2. Step 2: Convert to fraction form
   19,813,637.34/27,317,507.31 = 12,831,978.42/x
3. Step 3: Cross multiply
   19,813,637.34x = 27,317,507.31 × 12,831,978.42
4. Step 4: Simplify right side
   19,813,637.34x = 350,537,664,290,112.25
5. Step 5: Solve for x
   x = 350,537,664,290,112.25/19,813,637.34
6. Step 6: Final answer
   x = 17,691,737.17