Finding the Fourth Proportional to 37,656.78, 56,450.61 and 13,015.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,656.78 : 56,450.61 = 13,015.50 : x
2. Step 2: Convert to fraction form
   37,656.78/56,450.61 = 13,015.50/x
3. Step 3: Cross multiply
   37,656.78x = 56,450.61 × 13,015.50
4. Step 4: Simplify right side
   37,656.78x = 734,732,914.46
5. Step 5: Solve for x
   x = 734,732,914.46/37,656.78
6. Step 6: Final answer
   x = 19,511.30