Finding the Fourth Proportional to 38,483.63, 53,106.89 and 21,488.16

Step by Step Solution

1. Step 1: Write the proportion equation
   38,483.63 : 53,106.89 = 21,488.16 : x
2. Step 2: Convert to fraction form
   38,483.63/53,106.89 = 21,488.16/x
3. Step 3: Cross multiply
   38,483.63x = 53,106.89 × 21,488.16
4. Step 4: Simplify right side
   38,483.63x = 1,141,168,976.45
5. Step 5: Solve for x
   x = 1,141,168,976.45/38,483.63
6. Step 6: Final answer
   x = 29,653.36