Finding the Fourth Proportional to 37,515.78, 56,256.32 and 13,817.34

Step by Step Solution

1. Step 1: Write the proportion equation
   37,515.78 : 56,256.32 = 13,817.34 : x
2. Step 2: Convert to fraction form
   37,515.78/56,256.32 = 13,817.34/x
3. Step 3: Cross multiply
   37,515.78x = 56,256.32 × 13,817.34
4. Step 4: Simplify right side
   37,515.78x = 777,312,700.59
5. Step 5: Solve for x
   x = 777,312,700.59/37,515.78
6. Step 6: Final answer
   x = 20,719.62