Finding the Fourth Proportional to 19,881,085.32, 29,818,128.06 and 5,308,185.60

Step by Step Solution

1. Step 1: Write the proportion equation
   19,881,085.32 : 29,818,128.06 = 5,308,185.60 : x
2. Step 2: Convert to fraction form
   19,881,085.32/29,818,128.06 = 5,308,185.60/x
3. Step 3: Cross multiply
   19,881,085.32x = 29,818,128.06 × 5,308,185.60
4. Step 4: Simplify right side
   19,881,085.32x = 158,280,157,987,047.91
5. Step 5: Solve for x
   x = 158,280,157,987,047.91/19,881,085.32
6. Step 6: Final answer
   x = 7,961,343.93