Finding the Fourth Proportional to 35,422.68, 53,101.20 and 15,690.72

Step by Step Solution

1. Step 1: Write the proportion equation
   35,422.68 : 53,101.20 = 15,690.72 : x
2. Step 2: Convert to fraction form
   35,422.68/53,101.20 = 15,690.72/x
3. Step 3: Cross multiply
   35,422.68x = 53,101.20 × 15,690.72
4. Step 4: Simplify right side
   35,422.68x = 833,196,060.86
5. Step 5: Solve for x
   x = 833,196,060.86/35,422.68
6. Step 6: Final answer
   x = 23,521.54