Finding the Fourth Proportional to 37,779.91, 52,133.06 and 21,865.34

Step by Step Solution

1. Step 1: Write the proportion equation
   37,779.91 : 52,133.06 = 21,865.34 : x
2. Step 2: Convert to fraction form
   37,779.91/52,133.06 = 21,865.34/x
3. Step 3: Cross multiply
   37,779.91x = 52,133.06 × 21,865.34
4. Step 4: Simplify right side
   37,779.91x = 1,139,906,972.81
5. Step 5: Solve for x
   x = 1,139,906,972.81/37,779.91
6. Step 6: Final answer
   x = 30,172.31