Finding the Fourth Proportional to 38,475.92, 53,097.72 and 21,710

Step by Step Solution

1. Step 1: Write the proportion equation
   38,475.92 : 53,097.72 = 21,710 : x
2. Step 2: Convert to fraction form
   38,475.92/53,097.72 = 21,710/x
3. Step 3: Cross multiply
   38,475.92x = 53,097.72 × 21,710
4. Step 4: Simplify right side
   38,475.92x = 1,152,751,501.20
5. Step 5: Solve for x
   x = 1,152,751,501.20/38,475.92
6. Step 6: Final answer
   x = 29,960.34