Finding the Fourth Proportional to 52,212.63, 72,051.50 and 28,338.79

Step by Step Solution

1. Step 1: Write the proportion equation
   52,212.63 : 72,051.50 = 28,338.79 : x
2. Step 2: Convert to fraction form
   52,212.63/72,051.50 = 28,338.79/x
3. Step 3: Cross multiply
   52,212.63x = 72,051.50 × 28,338.79
4. Step 4: Simplify right side
   52,212.63x = 2,041,852,327.69
5. Step 5: Solve for x
   x = 2,041,852,327.69/52,212.63
6. Step 6: Final answer
   x = 39,106.48