Finding the Fourth Proportional to 38,895.03, 53,670.72 and 21,897.99

Step by Step Solution

1. Step 1: Write the proportion equation
   38,895.03 : 53,670.72 = 21,897.99 : x
2. Step 2: Convert to fraction form
   38,895.03/53,670.72 = 21,897.99/x
3. Step 3: Cross multiply
   38,895.03x = 53,670.72 × 21,897.99
4. Step 4: Simplify right side
   38,895.03x = 1,175,280,889.85
5. Step 5: Solve for x
   x = 1,175,280,889.85/38,895.03
6. Step 6: Final answer
   x = 30,216.74