Finding the Fourth Proportional to 37,290.78, 55,899.32 and 15,090.10

Step by Step Solution

1. Step 1: Write the proportion equation
   37,290.78 : 55,899.32 = 15,090.10 : x
2. Step 2: Convert to fraction form
   37,290.78/55,899.32 = 15,090.10/x
3. Step 3: Cross multiply
   37,290.78x = 55,899.32 × 15,090.10
4. Step 4: Simplify right side
   37,290.78x = 843,526,113.53
5. Step 5: Solve for x
   x = 843,526,113.53/37,290.78
6. Step 6: Final answer
   x = 22,620.23