Finding the Fourth Proportional to 37,779.17, 52,137 and 21,860.54

Step by Step Solution

1. Step 1: Write the proportion equation
   37,779.17 : 52,137 = 21,860.54 : x
2. Step 2: Convert to fraction form
   37,779.17/52,137 = 21,860.54/x
3. Step 3: Cross multiply
   37,779.17x = 52,137 × 21,860.54
4. Step 4: Simplify right side
   37,779.17x = 1,139,742,713.30
5. Step 5: Solve for x
   x = 1,139,742,713.30/37,779.17
6. Step 6: Final answer
   x = 30,168.55