Finding the Fourth Proportional to 37,312.42, 55,971.15 and 13,938.34

Step by Step Solution

1. Step 1: Write the proportion equation
   37,312.42 : 55,971.15 = 13,938.34 : x
2. Step 2: Convert to fraction form
   37,312.42/55,971.15 = 13,938.34/x
3. Step 3: Cross multiply
   37,312.42x = 55,971.15 × 13,938.34
4. Step 4: Simplify right side
   37,312.42x = 780,144,918.89
5. Step 5: Solve for x
   x = 780,144,918.89/37,312.42
6. Step 6: Final answer
   x = 20,908.45