Finding the Fourth Proportional to 58,659.96, 88,002.74 and 21,216.12

Step by Step Solution

1. Step 1: Write the proportion equation
   58,659.96 : 88,002.74 = 21,216.12 : x
2. Step 2: Convert to fraction form
   58,659.96/88,002.74 = 21,216.12/x
3. Step 3: Cross multiply
   58,659.96x = 88,002.74 × 21,216.12
4. Step 4: Simplify right side
   58,659.96x = 1,867,076,692.17
5. Step 5: Solve for x
   x = 1,867,076,692.17/58,659.96
6. Step 6: Final answer
   x = 31,828.81