Finding the Fourth Proportional to 38,118.51, 52,607.61 and 21,124.17

Step by Step Solution

1. Step 1: Write the proportion equation
   38,118.51 : 52,607.61 = 21,124.17 : x
2. Step 2: Convert to fraction form
   38,118.51/52,607.61 = 21,124.17/x
3. Step 3: Cross multiply
   38,118.51x = 52,607.61 × 21,124.17
4. Step 4: Simplify right side
   38,118.51x = 1,111,292,096.93
5. Step 5: Solve for x
   x = 1,111,292,096.93/38,118.51
6. Step 6: Final answer
   x = 29,153.61