Finding the Fourth Proportional to 38,870.01, 53,643.34 and 21,875.89

Step by Step Solution

1. Step 1: Write the proportion equation
   38,870.01 : 53,643.34 = 21,875.89 : x
2. Step 2: Convert to fraction form
   38,870.01/53,643.34 = 21,875.89/x
3. Step 3: Cross multiply
   38,870.01x = 53,643.34 × 21,875.89
4. Step 4: Simplify right side
   38,870.01x = 1,173,495,805.07
5. Step 5: Solve for x
   x = 1,173,495,805.07/38,870.01
6. Step 6: Final answer
   x = 30,190.26