Finding the Fourth Proportional to 37,779.93, 52,139.43 and 21,869.91

Step by Step Solution

1. Step 1: Write the proportion equation
   37,779.93 : 52,139.43 = 21,869.91 : x
2. Step 2: Convert to fraction form
   37,779.93/52,139.43 = 21,869.91/x
3. Step 3: Cross multiply
   37,779.93x = 52,139.43 × 21,869.91
4. Step 4: Simplify right side
   37,779.93x = 1,140,284,641.55
5. Step 5: Solve for x
   x = 1,140,284,641.55/37,779.93
6. Step 6: Final answer
   x = 30,182.29