Finding the Fourth Proportional to 52,185.22, 72,015.76 and 28,312.09

Step by Step Solution

1. Step 1: Write the proportion equation
   52,185.22 : 72,015.76 = 28,312.09 : x
2. Step 2: Convert to fraction form
   52,185.22/72,015.76 = 28,312.09/x
3. Step 3: Cross multiply
   52,185.22x = 72,015.76 × 28,312.09
4. Step 4: Simplify right side
   52,185.22x = 2,038,916,607.76
5. Step 5: Solve for x
   x = 2,038,916,607.76/52,185.22
6. Step 6: Final answer
   x = 39,070.77