Finding the Fourth Proportional to 38,897.64, 53,679.06 and 22,131.72

Step by Step Solution

1. Step 1: Write the proportion equation
   38,897.64 : 53,679.06 = 22,131.72 : x
2. Step 2: Convert to fraction form
   38,897.64/53,679.06 = 22,131.72/x
3. Step 3: Cross multiply
   38,897.64x = 53,679.06 × 22,131.72
4. Step 4: Simplify right side
   38,897.64x = 1,188,009,925.78
5. Step 5: Solve for x
   x = 1,188,009,925.78/38,897.64
6. Step 6: Final answer
   x = 30,541.95