Finding the Fourth Proportional to 38,886.72, 58,323.60 and 12,610.32

Step by Step Solution

1. Step 1: Write the proportion equation
   38,886.72 : 58,323.60 = 12,610.32 : x
2. Step 2: Convert to fraction form
   38,886.72/58,323.60 = 12,610.32/x
3. Step 3: Cross multiply
   38,886.72x = 58,323.60 × 12,610.32
4. Step 4: Simplify right side
   38,886.72x = 735,479,259.55
5. Step 5: Solve for x
   x = 735,479,259.55/38,886.72
6. Step 6: Final answer
   x = 18,913.38