Finding the Fourth Proportional to 52,470, 72,407.70 and 28,596.96

Step by Step Solution

1. Step 1: Write the proportion equation
   52,470 : 72,407.70 = 28,596.96 : x
2. Step 2: Convert to fraction form
   52,470/72,407.70 = 28,596.96/x
3. Step 3: Cross multiply
   52,470x = 72,407.70 × 28,596.96
4. Step 4: Simplify right side
   52,470x = 2,070,640,100.59
5. Step 5: Solve for x
   x = 2,070,640,100.59/52,470
6. Step 6: Final answer
   x = 39,463.31