Finding the Fourth Proportional to 38,494.38, 53,127.52 and 21,499.67

Step by Step Solution

1. Step 1: Write the proportion equation
   38,494.38 : 53,127.52 = 21,499.67 : x
2. Step 2: Convert to fraction form
   38,494.38/53,127.52 = 21,499.67/x
3. Step 3: Cross multiply
   38,494.38x = 53,127.52 × 21,499.67
4. Step 4: Simplify right side
   38,494.38x = 1,142,224,094.17
5. Step 5: Solve for x
   x = 1,142,224,094.17/38,494.38
6. Step 6: Final answer
   x = 29,672.49