Finding the Fourth Proportional to 48,032.72, 72,052.72 and 12,971.86

Step by Step Solution

1. Step 1: Write the proportion equation
   48,032.72 : 72,052.72 = 12,971.86 : x
2. Step 2: Convert to fraction form
   48,032.72/72,052.72 = 12,971.86/x
3. Step 3: Cross multiply
   48,032.72x = 72,052.72 × 12,971.86
4. Step 4: Simplify right side
   48,032.72x = 934,657,796.46
5. Step 5: Solve for x
   x = 934,657,796.46/48,032.72
6. Step 6: Final answer
   x = 19,458.77