Finding the Fourth Proportional to 53,328.42, 79,995.06 and 13,889.52

Step by Step Solution

1. Step 1: Write the proportion equation
   53,328.42 : 79,995.06 = 13,889.52 : x
2. Step 2: Convert to fraction form
   53,328.42/79,995.06 = 13,889.52/x
3. Step 3: Cross multiply
   53,328.42x = 79,995.06 × 13,889.52
4. Step 4: Simplify right side
   53,328.42x = 1,111,092,985.77
5. Step 5: Solve for x
   x = 1,111,092,985.77/53,328.42
6. Step 6: Final answer
   x = 20,834.91