Finding the Fourth Proportional to 28,635,636.72, 39,517,184.52 and 15,758,580.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,635,636.72 : 39,517,184.52 = 15,758,580.72 : x
2. Step 2: Convert to fraction form
   28,635,636.72/39,517,184.52 = 15,758,580.72/x
3. Step 3: Cross multiply
   28,635,636.72x = 39,517,184.52 × 15,758,580.72
4. Step 4: Simplify right side
   28,635,636.72x = 622,734,742,085,554.50
5. Step 5: Solve for x
   x = 622,734,742,085,554.50/28,635,636.72
6. Step 6: Final answer
   x = 21,746,844.61